McMaster-Carr logo
    Filter by
    System of Measurement
    Length
    Material
    Performance
    Length Accuracy
    Reading Direction
    Width
    Graduation Location
    Orientation
    Manufacturer
    Thickness
    Graduation Type
    Military Specification
    Graduation Color
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Numeric Graduations
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Manufacturer Model Number
    Professional Trade
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    2 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
     
    Starrett Rulers
    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-722117A4300000002117A44000000000
     
    back to top