Mountable Rulers | McMaster-Carr

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796 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—available with certificates traceable to NIST

127 products

Adhesive-Back Rulers

Permanently stick to surfaces for repeated, hands-free measuring

174 products

Pocket Rulers

No bigger than a pen for measuring on the go

8 products

See-Through Rulers

Made of clear plastic, so you won't lose sight of what you're measuring

2 products

Center-Finding Rulers

Quickly locate the center of workpieces without any math

8 products

Pocket Center-Finding Rulers

Tuck into your pocket to find the center of workpieces on the go

2 products

Tape Rulers

Unwind from a roll and cut to the length you need, similar to masking tape

2 products

Rulers for Cutting

Prevent nicking your fingers while measuring and cutting straight lines

7 products

Yardsticks

Your everyday classroom yardsticks

1 product

Circumference-Measuring Rulers

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

2 products

Vertical Rulers

Measure height and depth without reading sideways

5 products

Adhesive-Back Vertical Rulers

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

64 products

Rulers for Floors

Take repeated measurements of objects too heavy or too long to lift onto a workbench

9 products

Pica Rulers

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

4 products

Scale Rulers

Half-Measure Adhesive-Back Rulers

Take division out of the equation when building half-scale models and prototypes

14 products

Half-Measure Adhesive-Back Vertical Rulers

Measure height while building half-scale models and prototypes—no division required

4 products

Other Products

Tap and Drill Chart/Rulers

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

1 product

Staff Gauges

Typically mounted to walls and tanks for measuring the level of liquids, such as water, fuel, and oil

14 products

Protractors

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

16 products

Tape Measures

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

238 products

Linear Scales

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

15 products

Depth Gauges

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

33 products

Squares

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

14 products