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About High-Quality Rulers
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
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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.
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Lg. | Front Graduations (Numeric Graduations) | Back Graduations (Numeric Graduations) | Accuracy | Wd. | Thk. | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Starrett Rulers | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 5 3/4"/150 mm | 1/32" (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 mm | 1/2" | 1/64" | C331-150 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 Starrett High-Accuracy Ruler 5-3/4"/150 mm Length, 32nds and 64ths Front Graduation Marks EachDelivers tomorrow | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
