Metric Try Squares | McMaster-Carr

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27 Products

Combination Squares

Replace your try square, miter square, depth gauge, marking gauge, 90° level, ruler, and scriber with one tool. Blades labeled with numeric increments that are less than 1" are quick-reading.

Blades with Square Head with Built-In Level


	Inch/Metric

Square head checks 90° angles.

Etched—Etched graduation marks are wear resistant.

				Blade				Graduation		Plastic Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch/Metric



		12"/304 mm	1/32" (8/32"), 1 mm (10 mm)	1 mm (10 mm), 1/16" (1")	1"	3/32"	Stainless Steel	Silver	Black	Etched	4 9/16"	000000	00000

Blades with Square Head with Built-In Level and Scriber


	Inch/Metric

Metric

Square head checks 90° angles.

Etched—Etched graduation marks are wear resistant.

				Blade				Graduation		Zinc Alloy Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch/Metric



		12"/300 mm	1/32" (8/32"), 1 mm (10 mm)	1 mm (10 mm), 1/16" (1")	1"	3/32"	Stainless Steel	Silver	Black	Etched	4 5/8"	00000000	000000


		16"/400 mm	1/32" (8/32"), 1 mm (10 mm)	1 mm (10 mm), 1/16" (1")	1"	3/32"	Stainless Steel	Silver	Black	Etched	4 3/4"	00000000	00000
		6"/150 mm	1/32" (8/32"), 1 mm (10 mm)	1 mm (10 mm), 1/16" (1")	13/16"	5/64"	Stainless Steel	Silver	Black	Etched	3 11/16"	00000000	00000


		Metric



				150 mm	1 mm (10 mm), 1 mm (10 mm)	1 mm (10 mm), 1 mm (10 mm)	13/16"	5/64"	Stainless Steel	Silver	Black	Etched	3 11/16"	0000000	00000


				300 mm	1 mm (10 mm), 1 mm (10 mm)	1 mm (10 mm), 1 mm (10 mm)	1"	3/32"	Stainless Steel	Silver	Black	Etched	4 5/8"	0000000	00000
				400 mm	1 mm (10 mm), 1 mm (10 mm)	1 mm (10 mm), 1 mm (10 mm)	1"	3/32"	Stainless Steel	Silver	Black	Etched	4 5/8"	0000000	00000

Blades with Square Head, Angle Finder, and Scriber


	Inch/Metric

Square head checks 90° angles.

Angle finder measures any angle from 0° to 90° and has a chart to convert angle to pitch.

Etched—Etched graduation marks are wear resistant.

					Blade				Graduation		Zinc Alloy Square Head
	Blade Lg.	Angle Finder Angle Measured Range	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch/Metric



		12"/300 mm	0° to 90°	1 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/16" (1")	1"	5/64"	Steel	Silver	Black	Etched	4"	0000000	000000

Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head with Built-In Level, and Scriber


	Inch/Metric

Square head checks 90° angles.

Protractor head measures angles.

Center head identifies the center on pipes, rods, and shafts.

Etched—Etched graduation marks are wear resistant.

				Blade				Graduation		Aluminum Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch/Metric



		12"/300 mm	1 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/16" (1")	1"	3/32"	Steel	Silver	Black	Etched	4 1/4"	000000	000000

Squares


	Metric

Also known as try squares, these are square inside and out for checking and marking angles.

						Blade			Graduation
	Angle Measured	Blade Lg.	Handle Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Color	Color	Type	Handle Material	Measuring Features		Each
Metric







				Stainless Steel

				45°, 90°	200 mm	5 1/4"	1 mm (20 mm), 1 mm (20 mm)	1 mm (20 mm), 1 mm (20 mm)	1 1/2"	1/16"	Silver	Silver	Printed	Plastic	Level	0000000	00000

Squares with 2 Graduated Blades

Also known as carpenters’ and framing squares, these have graduations on both blades for horizontal and vertical measurements.

Squares—Inch/Metric

Image of Product. Front orientation. Contains Annotated. Squares. Squares with 2 Graduated Blades.

					Graduation
Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Material	Color	Color	Type		Each
12" (30 cm) × 8" (20 cm)	1/8" (1"), 1/8" (1"), 1/8" (1"), 1/8" (1")	1 mm (20 mm), 1 mm (20 mm), 1 mm (20 mm), 1 mm (20 mm)	Epoxy-Coated Steel	Silver	Silver	Printed	0000000	00000
24" (600 mm) × 16" (400 mm)	1/8" (1"), 1/8" (1"), 1/8" (1"), 1/8" (1")	2 mm (2 cm), 2 mm (2 cm), 2 mm (2 cm), 2 mm (2 cm)	Epoxy-Coated Steel	Silver	Silver	Printed	0000000	00000

Squares with Rafter Framing Tables—Metric

Squares with rafter framing tables are also known as rafter squares.

Etched—Etched graduation marks are wear resistant.

					Graduation
Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Material	Color	Color	Type		Each
600 mm × 400 mm	2 mm (10 mm), 2 mm (10 mm), 2 mm (10 mm), 2 mm (10 mm)	2 mm (10 mm), 2 mm (10 mm), 2 mm (10 mm), 2 mm (10 mm)	Aluminum	Blue	White	Etched	0000000	000000

Starrett High-Accuracy Combination Squares

Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading.

Blades with Square Head with Built-In Level and Scriber


	Inch/Metric

Square head checks 90° angles.

Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.

Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.

Etched—Etched graduation marks are wear resistant.

					Blade					Graduation		Cast Iron Square Head			Hardened Steel Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Appearance	Color	Color	Type	Head Lg.		Each	Head Lg.		Each
Inch/Metric



		11 3/4"/300 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.005"/ -0.09 mm to 0.15 mm	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	0000000	0000000	3 5/8"	0000000	0000000


		23 1/2"/600 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.007"/ -0.11 mm to 0.25 mm	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	0000000	000000

Replacement Square Head Lockbolts

		Each
Replacement Lockbolt for Square, Center, and Protractor Heads	0000000	00000

Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber


	Inch/Metric

Square head checks 90° angles.

Protractor head measures angles.

Center head identifies the center on pipes, rods, and shafts.

Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.

Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.

Etched—Etched graduation marks are wear resistant.

					Blade					Graduation		Cast Iron Square Head			Hardened Steel Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Appearance	Color	Color	Type	Head Lg.		Each	Head Lg.		Each
Inch/Metric



		11 3/4"/300 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.005"/ -0.09 mm to 0.15 mm	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	0000000	0000000	—	———	0


		11 3/4"/300 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.005"/ -0.09 mm to 0.15 mm	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	0000000	0000000
		23 1/2"/600 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.007"/ -0.11 mm to 0.25 mm	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	0000000	000000	—	———	0

Replacement Square Head Lockbolts

		Each
Replacement Lockbolt for Square, Center, and Protractor Heads	0000000	00000

Angle Squares

Also known as rafter squares, these have a 0° to 90° scale for measuring angles. All squares have a rafter scale and saw guide.

Anodized Aluminum—Aluminum squares are durable and work in most applications.

	Back Graduations (Numeric Graduations)	Thk.	Color	Graduation Color		Each
Metric







	Anodized Aluminum

	90°	18 cm × 18 cm	0.5 cm (1 cm)	—	3/16"	Black	White	0000000	000000


	90°	25 cm × 25 cm	0.5 cm (1 cm)	0.5 cm (1 cm)	3/16"	Silver	Silver	00000000	00000

Mitutoyo Squareness Gauges

Ensure parts are perfectly straight and square—these gauges detect surface deviations so small the human eye can’t see them. As you slide the lever on these gauges up and down, a dial test indicator moves along the vertical surface of your workpiece, measuring how straight and square it is. Checking for slight angles on machined parts or frames verifies they will align properly and function correctly. You can adjust the squareness of the gauges to fine-tune for differences in temperature and humidity and to maintain precision over years of use. Measure an object for height with the scale along the side of the gauge. The housing is cast iron, so the gauges are stable and stand up to frequent use.

					Material		Base
Distance Measured Range, mm	Accuracy	Measuring Increments, mm	Squareness Tolerance, mm	Straightness Tolerance, mm	Housing	Column	Lg.	Wd.	Includes	Mfr. Model No.		Each
0 to 150	±0.003 mm	0.002	0.003	0.002	Cast Iron	Aluminum	7"	4"	Dial Indicator, Micrometer	311-215	0000000	000000000
0 to 250	±0.003 mm	0.002	0.009	0.0035	Cast Iron	Aluminum	7"	4"	Dial Indicator, Micrometer	311-225	0000000	00000000
0 to 450	±0.003 mm	0.002	0.006	0.0025	Cast Iron	Aluminum	7"	4"	Dial Indicator, Micrometer	311-245	0000000	00000000

Starrett High-Accuracy Combination Square Blades

Inch/Metric

Use these blades with Starrett High-Accuracy Combination Square Heads. They meet Fed. Spec. GGG-R-791, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have a corrosion-resistant satin chrome-plated finish that reduces glare and wear-resistant etched markings.

								Graduation
	Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Color	Color	Type		Each
Inch/Metric







				Satin Chrome-Plated Steel

				11 3/4"/300 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.005"/-0.09 mm to 0.15 mm	1"	3/32"	Silver	Black	Etched	0000000	0000000


				23 1/2"/600 mm	0.5 mm (10 mm), 1/32" (4/32")	1 mm (10 mm), 1/64" (8/64")	-0.0035" to 0.007"/-0.11 mm to 0.25 mm	1"	3/32"	Silver	Black	Etched	0000000	000000