Straightedges

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809 Products

Straightedges and Drafting Rules

Use these highly accurate straightedges as a guide to scribe and cut straight lines and to check surface straightness.

Rolling Parallel Rules

A rule, compass, protractor, and template all in one tool.

Folding Triangle Straightedges

Unfold and lock the corners to form a triangle for marking angles.

Triangle Straightedges

Mark and cut straight lines or 90° angles.

Triangle Straightedges/Protractors

A protractor and triangle in one, use these tools to quickly set any angle from 0° to 90°.

T-Squares

Draw and cut straight lines in drafting, graphics, and construction applications.

Architects’ and Engineers’ Scales

Take measurements off of scaled architectural or engineering drawings with these specialized scales.

Straightedges with Graduations

Highly accurate, these straightedges work as a guide to scribe and cut straight lines and to check surface straightness. They have graduations, so you can take measurements as you go.

Pocket Architects’ and Engineers’ Scales

Small enough to fit into your pocket, the blade is narrow and only 6" long. These scales are often used for taking measurements off scaled architectural or engineering drawings.

Horizontal Rulers

Lightweight Aluminum Rulers

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

Certified Lightweight Aluminum Rulers

Ensure accurate measurements with these certified rulers.

Corrosion-Resistant Stainless Steel Rulers

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

Certified Corrosion-Resistant Stainless Steel Rulers

A calibration certificate traceable to NIST is included with these stainless steel rulers.

Easy-to-Read High-Contrast Rulers

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

Easy-to-Read Rulers with Bold Markings

Rulers have large numbers and deeply etched graduations.

Transparent Rulers

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

Nonslip Rulers

A cork back prevents slipping and protects delicate surfaces.

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.

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.

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 with Hook

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

Magnetic High-Accuracy Rulers

High-powered magnets hold these rulers in place.

Scratch-Resistant High-Accuracy Rulers

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

Adhesive-Back Rulers

Permanently mount these rulers to a machine or workbench.

Half-Measure Adhesive-Back Rulers

Use to find diameters and centers.

Cut-Protection Rulers

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

Pocket Rulers

Rulers are narrow and just 6" long to measure in tight spaces.

Long-Length Rulers

Create a ruler up to 192" long by adding continuous segments.

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.

Adhesive-Back Vertical Rulers for Floors

These extra-thick rulers have a polycarbonate coating that resists wear from traffic and chemicals.

Half-Measure Adhesive-Back Vertical Rulers

The graduations on these rulers are half the actual length of the object you are measuring.

Long-Length Vertical Rulers

Use to measure heights and tank levels.

Vertical Rulers

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

Vertical Rulers with Hook

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

Center-Finding Rulers

Zero marks the center when these rulers are positioned so the same number touches each side of an object.

Pocket Center-Finding Rulers

Slip these rulers into your pocket, so they’re always on hand to find center readings. All are narrow and about 6" long to measure in tight spaces.

Circumference Rulers

Determine the circumference of a circle without calculations.

Printers' Pica Rulers

Rulers are marked with picas for working with type.

Tank-Level Rulers

Tank-Level Folding Rulers

Fold these vertical rulers for convenient storage and transport.

Tank-Level Rulers

Built to resist corrosion and last in harsh environments, these vertical rulers are iron with a porcelain-enamel finish. Mount them to walls and tanks.

55-Gallon Drum-Level Rulers

Measure volume in gallons or liters without calculations.

Long-Length Tank-Level Rulers

Connect continuous segments to create a ruler up to 10 ft. long.

Adhesive-Back Tank-Level Rulers

Permanently mount these vertical rulers to walls and tanks.

Flexible Magnetic-Back Tape Measures

Flexible Magnetic-Back Tape Measure Sets

Attach to curved or flat steel surfaces.

Flexible Magnetic-Back Tape Measures

Attach to curved or flat steel surfaces.

Leveling and Aligning

Parallel Straightedges

Level machinery, check surface flatness, and scribe work positions.

Levels with Rulers

Align and measure at the same time with these levels that have rulers.

Sawing, Cutting, and Scraping

Plasma/Oxyacetylene Torch Cutting Guides

Insert a plasma or oxyacetylene torch in these guides for balance and stability when cutting straight, circular, and irregular shapes. They’re designed to cut as well as bevel at the same time.

Cutting Guides

Clamp one of these guides onto your workpiece to make straight cuts.

Magnifying Bars

These plastic bars have a magnified center; their edges are marked with graduations.