Rigid Rulers | McMaster-Carr

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218 Products

Horizontal Rulers

Corrosion-Resistant Stainless Steel Rulers

Made to last, our most corrosion-resistant rulers are stainless steel and have wear-resistant etched markings.

Certified Lightweight Aluminum Rulers

Ensure accurate measurements with these certified rulers.

Lightweight Aluminum Rulers

Made of aluminum, these rulers are an economical alternative to stainless steel rulers.

Easy-to-Read High-Contrast Rulers

Numbers and graduations etched in light colors are easy to see on a black background.

Transparent Rulers

Keep your workpiece in view as you measure with these see-through rulers.

Wood Rulers

A clear protective coating and brass endcaps add durability to these hard-maple rulers.

Wood Yardsticks

Made of wood with a clear protective coating, this ruler is an economical choice for measuring objects up to three feet long.

High-Accuracy Rulers

An economical alternative to Starrett High-Accuracy Rulers, these provide reliable, repeatable measurements.

Certified High-Accuracy Rulers

These rulers include a certificate of calibration traceable to NIST with test measurements that confirm accuracy.

Starrett High-Accuracy Rulers

Also known as machinists’ rules, these rulers ensure reliable, repeatable measurements.

Starrett Certified High-Accuracy Rulers

Ensure reliable, repeatable measurements with these rulers.

Starrett High-Accuracy Rulers with Hook

A reversible, removable hook grabs the edge of an object for easy alignment.

Scratch-Resistant High-Accuracy Rulers

Protect your ruler from scratches and wear with a TiN (titanium nitride) coating.

Magnetic High-Accuracy Rulers

High-powered magnets hold these rulers in place.

Adhesive-Back Rulers

Permanently mount these rulers to a machine or workbench.

Cut-Protection Rulers

Cut-Protection Rulers

A safety guard or finger groove prevents your fingers from getting in the way as you cut with these rulers.

Folding Rulers

Fold these rulers for convenient storage and transport.

Vertical Rulers

Adhesive-Back Vertical Rulers

Permanently mount these rulers on machines, tanks, and walls to measure heights and depths.

Vertical Rulers

Measurements are printed from top to bottom for measuring heights and depths.

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