6" Rulers | McMaster-Carr

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68 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

14 products

High-Accuracy Rulers

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

32 products

Magnetic High-Accuracy Rulers

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

2 products

Easy-Read Rulers

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

4 products

Pocket Rulers

No bigger than a pen for measuring on the go

7 products

See-Through Rulers

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

1 product

Pocket Center-Finding Rulers

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

1 product

Other Products

Depth Gauges

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

3 products

Combination Square Blades

Connect to a combination square head to create a combination square

4 products