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    198 Products
    About High-Quality Rulers
    industrial info icon

    What separates a throwaway ruler from one you’ll keep for decades, which type is best for everyday use, and how to compare materials.

    High-Accuracy Rulers

    With tolerances tight enough for machining detailed parts, these rulers are the most accurate we offer. They're also the most precise, with graduations as small as 1/64", so you can trust them for even the tiniest dimensions. Also known as machinists' rules.
    All are precision made and etched in the U.S. to meet federal standards. Made of tempered steel for extra strength, they keep their shape even after multiple hard hits and drops, so they'll measure accurately for years to come. Their graduations are deeply engraved and blackened with ink, meaning they won't rub off like printed graduations can.
    Satin Chrome-Plated Steel
    Image of Product. Front orientation. Rulers. High-Accuracy Rulers, Chrome-Plated Steel.
    Tough enough to handle most tasks, these rulers are chrome plated to resist rust. Their satin finish reduces glare for easy reading.
    Starrett Rulers—These rulers are manufactured by Starrett, one of the most trusted names for precision measuring tools.
    Calibration Certificate—When precision measurements are required for quality control or by regulation, use a ruler that includes a calibration certificate traceable to NIST. The certificate states that the ruler has passed a test for accuracy, so you can be confident your measurements are correct and consistent.
    Rulers
    Rulers with
    Calibration Certificate
    Lg.
    Front Graduations (Numeric Graduations)
    Back Graduations (Numeric
    Graduations)
    Accuracy
    Wd.
    Thk.
    Mfr. Model
    No.
    Each
    Each
    Inch
     
    Rulers
    6"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.004"1/2"1/64"—0000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.004"1/2"1/64"—000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.004"3/4"3/64"—000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.004"1/2"1/64"—0000000000000000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.004"3/4"3/64"—000000000000000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.004"1/2"1/64"—000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.004"3/4"3/64"—000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.004"3/4"3/64"—000000000000000000000000
    12"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1/2"1/64"—000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1/2"1/64"—000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/64"—000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1/2"1/64"—000000000000000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/64"—000000000000000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.005"1/2"1/64"—000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.005"1"3/64"—000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/64"—000000000000000000000000
    18"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.006"3/4"1/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.006"3/4"1/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.006"1 1/8"3/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.006"3/4"1/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.006"1 1/8"3/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.006"3/4"1/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.006"1 1/8"3/64"—000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1 1/8"3/64"—000000000000———0
    24"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"3/4"1/64"—000000000000———0
    24"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.007"3/4"1/64"—000000000000———0
    24"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1 1/8"3/64"—000000000000———0
    24"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.007"3/4"1/64"—0000000000000000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1 1/8"3/64"—0000000000000000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/8"3/64"—0000000000000000000000000
    36"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.007"3/4"1/64"—00000000000000000000000000
    36"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1 1/4"3/64"—00000000000000000000000000
    36"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/4"3/64"—00000000000000000000000000
    48"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.008"1 1/4"3/64"—0000000000000———0
    48"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.008"3/4"1/64"—0000000000000———0
    48"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.008"1 1/4"3/64"—00000000000000000000000000
    48"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.008"1 1/4"3/64"—00000000000000000000000000
     
    Starrett Rulers
    3"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.004"9/16"3/64"C604R-3000000000000———0
    6"1/64" (8/64")1/16" (1"), 1/32" (4/32")-0.0035" to 0.004"1/2"1/64"C309R-6000000000000———0
    6"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.004"3/4"3/64"C604R-6000000000000000000000000
    6"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1"), 1/32" (4/32")-0.0035" to 0.004"3/4"3/64"C604RE-6000000000000———0
    6"1/50" (1/10"), 1/50" (1/10")1/10" (1/10"), 1/10" (1/10")-0.0035" to 0.004"3/4"3/64"C606R-6000000000000000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.004"1/2"1/64"C316R-6000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.004"3/4"3/64"C616R-6000000000000———0
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.004"1/2"1/64"C305R-600000000000000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")-0.0035" to 0.004"1/2"1/64"C303R-6000000000000———0
    12"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/64"C604R-120000000000000000000000000
    12"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1"), 1/32" (4/32")-0.0035" to 0.005"1"3/64"C604RE-12000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1/2"1/64"C316R-12000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/64"C616R-12000000000000———0
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1/2"1/64"C305R-12000000000000000000000000
    18"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1 1/8"3/64"C604R-180000000000000———0
    18"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.006"3/4"1/64"C305R-18000000000000———0
    24"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/4"3/64"C604R-2400000000000000000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.007"3/4"1/64"C305R-24000000000000———0
    36"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/4"3/64"C604R-3600000000000000000000000000
    48"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.005" to 0.010"1 1/4"3/64"C604R-480000000000000———0
    72"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.007" to 0.012"1 1/2"3/32"C404R-7200000000000000000000000000
    72"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.007" to 0.012"1 1/2"3/32"C416R-72000000000000000———0
     
    Inch/Metric
     
    Rulers
    6"/150 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm1/2"1/64"—00000000000———0
    6"/150 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm3/4"3/64"—00000000000000000000000
    12"/300 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.13 mm1/2"1/64"—00000000000———0
    12"/300 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.13 mm1"3/64"—000000000000000000000000
    18"/450 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.006"/-0.09 mm to 0.15 mm3/4"1/64"—000000000000———0
    18"/450 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.006"/-0.09 mm to 0.15 mm1 1/8"3/64"—000000000000———0
    24"/600 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.007"/-0.09 mm to 0.18 mm3/4"1/64"—000000000000———0
    24"/600 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.007"/-0.09 mm to 0.18 mm1 1/8"3/64"—0000000000000000000000000
    36"/900 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.007"/-0.09 mm to 0.18 mm1 1/8"3/64"————00000000000000
    48"/1,200 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.008"/-0.09 mm to 0.2 mm1 1/4"3/64"————00000000000000
     
    Starrett Rulers
    5 3/4"/150 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm1/2"1/64"C331-150000000000000———0
    5 3/4"/150 mm1/10" (1/10"), 1/50" (1/10")1 mm (10 mm), 0.5 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm1/2"1/64"C334-150000000000000000000000000
    5 3/4"/150 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.004"/-0.09 mm to 0.1 mm3/4"3/64"C636ME-150000000000000000000000000
    11 3/4"/300 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.15 mm1/2"1/64"C331-300000000000000———0
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/-0.09 mm to 0.15 mm1"3/64"C636-3000000000000000000000000000
    19 1/2"/500 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/-0.09 mm to 0.2 mm1 1/8"3/64"C636-50000000000000000000000000000
    39 1/4"/1,000 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.005" to 0.010"/-0.11 mm to 0.25 mm1 1/4"3/64"C636-100000000000000000000000000000
     
    Metric
     
    Rulers
    150 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.1 mm1/2"1/64"—00000000000———0
    150 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.1 mm3/4"3/64"—00000000000———0
    300 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.13 mm1/2"1/64"—00000000000———0
    300 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.13 mm1"3/64"—00000000000———0
    450 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.15 mm3/4"1/64"—000000000000———0
    450 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.15 mm1 1/8"3/64"—000000000000———0
    600 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.18 mm3/4"1/64"—000000000000———0
    600 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.18 mm1 1/8"3/64"—000000000000———0
     
    Starrett Rulers
    150 mm0.5 mm (10 mm)0.5 mm (10 mm), 1 mm (10 mm)-0.09 mm to 0.1 mm1/2"1/64"C330-150000000000000———0
    150 mm1 mm (10 mm), 0.5 mm (10 mm), 1 mm, 1 mm1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.1 mm3/4"3/64"C635E-150000000000000———0
    300 mm1 mm (10 mm), 0.5 mm (10 mm)1 mm (10 mm), 0.5 mm (10 mm)-0.09 mm to 0.15 mm1"3/64"C635-300000000000000———0
     
    Satin Chrome-Plated Steel with Easy-Align Hook End
    Image of Product. Front orientation. Rulers. High-Accuracy Rulers, Chrome-Plated Steel, Easy Align Hook End.
    Take accurate measurements even when you can't see the exact edge of what you're measuring, such as when working with round corners. Similar to a tape measure, these rulers have a hook on one end to catch the edge of an object, keeping the ruler straight. Turn the stud to remove or reverse the hook.
    Tough enough to handle most tasks, these rulers are chrome plated to resist rust. Their satin finish reduces glare for easy reading.
    Starrett Rulers—These rulers are manufactured by Starrett, one of the most trusted names for precision measuring tools.
    Rulers
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Accuracy
    Wd.
    Thk.
    Mfr. Model
    No.
    Each
    Inch
     
    Starrett Rulers
    6"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.004"3/4"3/64"CH604R-60000000000000
    12"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/64"CH604R-12000000000000
    18"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1 1/8"3/64"CH604R-180000000000000
    24"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/4"3/64"CH604R-240000000000000
    36"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/4"3/64"CH604R-360000000000000
    48"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.005" to 0.010"1 1/2"3/32"CH404R-480000000000000
     
    Wear-Resistant Titanium Nitride (TiN)-Coated Steel
    Image of Product. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Rulers. High-Accuracy Rulers, Wear-Resistant Titanium Nitride (TiN)-Coated Steel.
    Our most scratch- and wear-resistant rulers withstand the busiest machine shops. These rulers are about 30% harder than chrome-plated steel rulers, so they'll keep looking like new even if they constantly slide and scrape against your workbench.
    Rulers
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Accuracy
    Wd.
    Thk.
    Each
    Inch
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.004"1/2"1/64"00000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.004"3/4"3/64"0000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.004"1/2"1/64"0000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.004"3/4"3/64"0000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1/2"1/64"0000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/64"0000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1/2"1/64"0000000000000
     
    Inch/Metric
    6"/150 mm1/32" (4/32"), 1/64" (8/64")1 mm (10 mm), 0.5 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm1/2"1/64"0000000000000
    6"/150 mm1/32" (4/32"), 1/64" (8/64")1 mm (10 mm), 0.5 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm3/4"3/64"0000000000000
    12"/300 mm1/32" (4/32"), 1/64" (8/64")1 mm (10 mm), 0.5 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.13 mm1/2"1/64"000000000000
    12"/300 mm1/32" (4/32"), 1/64" (8/64")1 mm (10 mm), 0.5 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.13 mm1"3/64"0000000000000
     

    Magnetic High-Accuracy Rulers

    Take machine-shop-accurate measurements while keeping your hands free. These rulers have magnets on both ends to cling to most metallic surfaces. Also known as machinists’ rules, they have the tightest tolerances we offer. They’re also our most precise, with graduations as small as 1/64", so you can trust them for even the tiniest dimensions.
    All are precision made and etched in the U.S. to meet federal standards. Made of tempered steel for extra strength, they keep their shape even after multiple hard hits and drops, so they'll measure accurately for years to come. Their graduations are deeply engraved and blackened with ink, meaning they won't rub off like printed graduations can.
    Satin Chrome-Plated Steel
    Image of Product. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Rulers. Magnetic High-Accuracy Rulers.
    Tough enough to handle most tasks, these rulers are chrome plated to resist rust. Their satin finish reduces glare for easy reading.
    Rulers
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Accuracy
    Wd.
    Thk.
    Each
    Inch
    6"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.004"3/4"3/64"0000000000000
    12"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/64"000000000000
    24"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/8"3/64"000000000000
    36"1/64" (8/64"), 1/32" (4/32")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1 1/8"3/64"0000000000000
     
    Inch/Metric
    6"/150 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.004"/-0.09 mm to 0.1 mm3/4"3/64"000000000000
    12"/300 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.005"/-0.09 mm to 0.13 mm1"3/64"000000000000
    24"/600 mm1/32" (4/32"), 1/64" (8/64")0.5 mm (10 mm), 1 mm (10 mm)-0.0035" to 0.007"/-0.09 mm to 0.18 mm1 1/8"3/64"000000000000
     

    Starrett High-Accuracy Combination Square Blades

    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Combination Square Blades. Starrett High-Accuracy Combination Square Blades, 4/32" Numeric Graduations.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Combination Square Blades. Starrett High-Accuracy Combination Square Blades, 10 mm Numeric Graduations.

    Inch

    Inch/Metric

    Use these blades with Starrett High-Accuracy Combination Square Heads. They meet Fed. Spec. GGG-R-791, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have a corrosion-resistant satin chrome-plated finish that reduces glare and wear-resistant etched markings.
    Graduation
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Color
    Color
    Type
    Each
    Inch
     
    Satin Chrome-Plated Steel
    4"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"5/8"1/16"SilverBlackEtched0000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"3/4"5/64"SilverBlackEtched000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.002" to 0.004"3/4"5/64"SilverBlackEtched000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"SilverBlackEtched000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/32"SilverBlackEtched0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"SilverBlackEtched0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1"3/32"SilverBlackEtched0000000000000
    36"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"SilverBlackEtched0000000000000
     
    Inch/Metric
     
    Satin Chrome-Plated Steel
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/-0.09 mm to 0.15 mm1"3/32"SilverBlackEtched0000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/-0.11 mm to 0.25 mm1"3/32"SilverBlackEtched0000000000000
     

    Starrett High-Accuracy Combination Squares

    Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading.
    Blades with Square Head
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head .
    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head , Inch.

    Inch

    Square head checks 90° angles.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Each
    Inch
    4"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"5/8"1/16"SteelSatinChrome, SilverBlackEtched2 1/4"0000000000000000000000000000
     
    Blades with Square Head and Center Head
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head and Center Head .
    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head and Center Head , Inch.

    Inch

    Square head checks 90° angles.
    Center head identifies the center on pipes, rods, and shafts.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Blade
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch
    4"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"5/8"1/16"SteelSatinChrome, SilverBlackEtched2 1/4"00000000000000
     
    Blades with Square Head with Built-In Level and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level and Scriber, Metric, Inch, 4/32" Numeric Graduations - 2, 10 mm Numeric Graduations.

    Inch/Metric

    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level and Scriber, Inch, 4/32" Numeric Graduations, 8/64" Numeric Graduations - 2.

    Inch

    Square head checks 90° angles.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Head
    Lg.
    Each
    Inch
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"3/4"5/64"Steel—SilverBlackEtched2 13/32"00000000000000————0
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"3/4"5/64"SteelSatinChrome, SilverBlackEtched2 13/32"00000000000002 13/32"00000000000000
    6"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.002" to 0.004"3/4"5/64"SteelSatinChrome, SilverBlackEtched2 13/32"00000000000002 13/32"0000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
    18"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
     
    Inch/Metric
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/
    -0.11 mm to 0.25 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"00000000000003 5/8"0000000000000
     
    Blades with Square Head with Built-In Level, Center Head, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, and Scriber.
    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, and Scriber, Inch.

    Inch

    Square head checks 90° angles.
    Center head identifies the center on pipes, rods, and shafts.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Head
    Lg.
    Each
    Inch
    6"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.002" to 0.004"3/4"5/64"SteelSatinChrome, SilverBlackEtched————02 13/32"00000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"000000000000003 5/8"0000000000000
     
    Blades with Square Head with Built-In Level, Center Head, Protractor Head, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Protractor Head, and Scriber.
    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Protractor Head, and Scriber, Inch.

    Inch

    Square head checks 90° angles.
    Protractor head measures angles.
    Center head identifies the center on pipes, rods, and shafts.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Blade
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"SteelSilverBlackEtched4 1/2"00000000000000
    18"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1"3/32"SteelSilverBlackEtched4 1/2"0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"SteelSilverBlackEtched4 1/2"0000000000000
     
    Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber.
    Square head checks 90° angles.
    Protractor head measures angles.
    Center head identifies the center on pipes, rods, and shafts.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Head
    Lg.
    Each
    Inch
    Image of Product. Inch. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber, Inch, 4/32" Numeric Graduations, 8/64" Numeric Graduations - 2.

    Inch

    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"Steel—SilverBlackEtched4 1/2"00000000000000————0
    12"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.005"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"00000000000000
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    12"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.005"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
    18"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    18"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.006"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
    18"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.006"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    24"1/32" (4/32"), 1/64" (8/64")1/8" (1"), 1/16" (1")-0.0035" to 0.007"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
    24"1/32" (4/32"), 1/64" (8/64")1/50" (1/10"), 1/100" (1/10")-0.0035" to 0.007"1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
     
    Inch/Metric
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber, Metric, Inch, 4/32" Numeric Graduations - 2, 10 mm Numeric Graduations.

    Inch/Metric

    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/
    -0.11 mm to 0.25 mm    		1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/
    -0.11 mm to 0.25 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
     
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