McMaster-Carr logo
    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)
    9 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.

    Ruler Type

    Performance

    Relative Size

    Drafting Rulers

    Image of Product. Front orientation. ZoomedIn view. Rulers. Drafting Rulers, Flat.
    Image of Product. Side2 orientation. Rulers. Drafting Rulers, Triangle.

    Flat

    Triangle

    Sketch buildings, roads, and other life-size objects to scale. These rulers feature the standard scales used by architects or engineers. All have beveled edges, so you can be confident your lines will be accurate and consistent no matter what angle you view the ruler from.
    Triangle—To quickly identify the scale you need, these rulers have a different-colored groove on each of their three sides.
    Measurement Scale Type
    Scale
    Material
    Blade
    Lg.
    Each
    Inch
     
    Flat
    Architects'1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3Plastic12"000000000000
     
    Triangle
    Architects'3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3, 16Plastic12"00000000000
    Engineers'10ths, 20ths, 30ths, 40ths, 50ths, 60thsPlastic12"00000000000
     
    Metric
     
    Triangle
    Architects'1:500, 1:400, 1:300, 1:250, 1:200, 1:100Plastic30 cm000000000000
    Architects', Engineers'1:125, 1:100, 1:75, 1:50, 1:25, 1:20Plastic30 cm000000000000
     

    Rulers

    Your go-to rulers for everyday measuring. Whether metal for durability or wood for a classic feel, our rulers measure up to most tasks, from woodwork to textiles to rough machining.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Rulers. Rulers, Corrosion-Resistant Stainless Steel.
    Our most corrosion-resistant rulers. These rulers won't rust when rinsed, rained on, or wiped down with degreasers or cleaning solutions. They're hardened to prevent dents and scratches, so you can trust they'll last for years to come. Etched and filled with black ink, their graduations won't rub off like printed graduations can.
    Length—For easy handling and storage, rulers that are 96" or longer come in multiple pieces that line up to create a complete ruler.
    Rulers
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Each
    Inch
     
    Left-to-Right Reading Direction
    12"1/32" (4/32"), 1/64" (8/64")1/10" (1/10"), 1/50" (1/10")1"3/64"000000000000
     

    Pocket Drafting Rulers

    Image of Product. Front orientation. ZoomedIn view. Rulers. Pocket Drafting Rulers, Triangle.

    Triangle

    For scaled-down drawings on the go, these rulers are no bigger than a pen to slip into your pocket. Sketch everything from roads to buildings to floor plans—they include the standard scales for architects or engineers. All have beveled edges, so you can be confident your lines will be accurate and consistent no matter what angle you view the ruler from.
    Triangle—To quickly identify the scale you need, these rulers have a different-colored groove on each of their three sides.
    Measurement Scale Type
    Scale
    Material
    Blade
    Lg.
    Each
    Inch
     
    Triangle
    Architects'3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3, 16Aluminum
    		6"0000000000000
    Engineers'10ths, 20ths, 30ths, 40ths, 50ths, 60thsAluminum
    		6"000000000000
     
    Inch/Metric
     
    Triangle
    Architects', Engineers'1/8, 1/4, 16, 1:500, 1:100, 10ths, 50thsAluminum
    		6"000000000000
     
    back to top