Steel Rulers | McMaster-Carr

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770 Products

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.

Rulers

Horizontal Rulers

Rulers

Your go-to rulers for everyday measuring

Adhesive-Back Rulers

Adhesive-Back Rulers

Permanently stick to surfaces for repeated, hands-free measuring

High-Accuracy Rulers

High-Accuracy Rulers

Our most accurate rulers, with tolerances tight enough for machining detailed parts

Magnetic High-Accuracy Rulers

Magnetic High-Accuracy Rulers

Take machine-shop-accurate measurements while keeping your hands free

Easy-Read Rulers

Easy-Read Rulers

Measure where it's too bright or too dark to read a standard metal ruler

Pocket Rulers

No bigger than a pen for measuring on the go

Center-Finding Rulers

Center-Finding Rulers

Quickly locate the center of workpieces without any math

Circumference-Measuring Rulers

Circumference-Measuring Rulers

Find the circumference of duct, pipe, and other cylindrical objects without doing math

Vertical Rulers

Vertical Rulers

Vertical Rulers

Measure height and depth without reading sideways

Adhesive-Back Vertical Rulers

Adhesive-Back Vertical Rulers

Stick to walls and tanks for repeated, hands-free height and depth measurements

Pica Rulers

Measure text, columns, margins, and other print elements in picas

Other Products

Tap and Drill Chart/Rulers

Tap and Drill Chart/Rulers

Reference tap and drill sizes, measure in inches, and convert to decimals with one tool

Combination Square Blades

Combination Square Blades

Connect to a combination square head to create a combination square

Tape Measures

Standard, long, center-finding, and flexible tape measures

Squares

Check 90° angles during layout work with combination, angle, or pipefitters' squares

Depth Gauges

Reach into slots, counterbores, and other holes to measure depth

Protractors

Set bevels and measure angles with everything from pocket-size to long-arm protractors

Linear Scales

Measure and display the position of tools on machines, such as lathes, saws, and drill presses

Combination Square Heads

Combination Square Heads

Attach combination square blades to form a combination square

Liquid-Level Tape Measures

Liquid-Level Tape Measures

Lower into deep containers, such as tanks, to check the level of oil and other fluids

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)