McMaster-Carr logo
    Filter by
    System of Measurement
    Length
    Width
    Graduations
    Numeric Graduations
    Professional Trade
    Manufacturer
    Thickness
    Material
    Manufacturer Model Number
    Reading Direction
    Orientation
    Graduation Type
    Military Specification
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Length Accuracy
    Graduation Color
    Graduation Location
    Performance
    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)
    1 Product
    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.
    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")1/16" (1"), 1/32" (4/32")-0.0035" to 0.004"1/2"1/64"C309R-62285A21000000
    Starrett High-Accuracy Ruler, 6" Length, 64ths Front Graduation Marks
    EachThis item is no longer available.
    We suggest 2285A5 for starrett model #c305r-6 with similar graduations.
     
    back to top