Iron Rulers | McMaster-Carr

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Square Head with Built-In Level

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63 Products

Pipe Size Tape Measures

Curl around pipe and pipe fittings to quickly determine their size—no math required. These tape measures are especially useful for measuring mounted pipe since you don’t need to take your system apart.

		Blade
For Pipe Material	For Pipe Size	Wd.	Material		Each



	Galvanized Steel, Iron, PVC Copper, CPVC	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 8, 10, 12, 14, 16, 18 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1 1/8, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 8, 10, 12	5/16"	Plastic	2219A21	000000

Staff Gauges

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.

						Graduation		Mounting Holes
	Length	Front Right Graduation Marks (Numeric Increments)	Wd.	Thk.	Color	Color	Type	No. of.	Dia.		Each
Inch—Bottom-to-Top Reading Direction







				Enamel-Coated Iron

				48"	1/2" (1")	2 1/2"	1/16"	White	Black	Printed	6	3/16"	1975A25	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


	Inch

Square head checks 90° angles.

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

Etched—Etched graduation marks are wear resistant.

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



		4"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.004"	5/8"	1/16"	Steel	Satin	Chrome, Silver	Black	Etched	2 1/4"	2108A21	0000000

Replacement Square Head Lockbolts

		Each
Replacement Lockbolt for Square and Center Heads	1955A81	000000

Blades with Square Head and Center Head


	Inch

Square head checks 90° angles.

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

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

Etched—Etched graduation marks are wear resistant.

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



		4"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.004"	5/8"	1/16"	Steel	Satin	Chrome, Silver	Black	Etched	2 1/4"	2108A11	0000000

Replacement Square Head Lockbolts

		Each
Replacement Lockbolt for Square and Center Heads	1955A81	000000

Blades with Square Head with Built-In Level and Scriber


	Inch/Metric

Inch

Square head checks 90° angles.

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

Etched—Etched graduation marks are wear resistant.

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



		6"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.004"	3/4"	5/64"	Steel	—	Silver	Black	Etched	2 13/32"	2108A44	0000000


		6"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.004"	3/4"	5/64"	Steel	Satin	Chrome, Silver	Black	Etched	2 13/32"	2108A22	000000
		6"	1/32" (4/32"), 1/64" (8/64")	1/50" (1/10"), 1/100" (1/10")	-0.002" to 0.004"	3/4"	5/64"	Steel	Satin	Chrome, Silver	Black	Etched	2 13/32"	2108A28	000000
		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	2108A45	000000
		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	2108A23	000000
		12"	1/32" (4/32"), 1/64" (8/64")	1/50" (1/10"), 1/100" (1/10")	-0.0035" to 0.005"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	2108A29	000000
		24"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.007"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	2108A25	000000


		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"	2108A26	000000

Replacements for Squares

		Each
Replacement Case for Combination Squares with 12" Long Blade	4264N11	0000000
Replacement Lockbolt for Square and Center Heads	1955A82	00000
Replacement Lockbolt for Square, Center, and Protractor Heads	1955A83	0000

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


	Inch

Square head checks 90° angles.

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

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

Etched—Etched graduation marks are wear resistant.

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



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	2108A13	0000000

Replacements for Squares

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


	Inch

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		Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	2108A57	0000000


		24"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.007"	1"	3/32"	Steel	Silver	Black	Etched	4 1/2"	2108A59	000000

Replacements for Squares

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


	Inch/Metric

Inch

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



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	2108A51	0000000	—	———	0


		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.005"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	2107A51	0000000
		12"	1/32" (4/32"), 1/64" (8/64")	1/50" (1/10"), 1/100" (1/10")	-0.0035" to 0.005"	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	2108A54	000000	—	———	0
		12"	1/32" (4/32"), 1/64" (8/64")	1/50" (1/10"), 1/100" (1/10")	-0.0035" to 0.005"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	2107A54	000000
		24"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.007"	1"	3/32"	Steel	—	Silver	Black	Etched	4 1/2"	2108A53	000000	—	———	0
		24"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0035" to 0.007"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	2107A53	000000
		24"	1/32" (4/32"), 1/64" (8/64")	1/50" (1/10"), 1/100" (1/10")	-0.0035" to 0.007"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	—	———	0	3 5/8"	2107A56	000000


		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"	2108A55	000000	—	———	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"	2107A57	000000

Replacements for Squares

Starrett High-Accuracy Combination Square Heads

Attach to Starrett High-Accuracy Combination Square Blades with the included lockbolts.

Square Heads

Square heads check 90° angles.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

		Cast Iron
For Blade Lg.	Features		Each
4"	—	1955A11	000000
6"	Built-In Level	1955A12	00000
12" to 48"	Built-In Level	1955A13	00000

Replacement Square Head Lockbolts

For Head Style	For Blade Lg.		Each
Center, Square	4"	1955A81	000000
Center, Square	6"	1955A82	00000
Center, Square, Protractor	12" to 36"/300 mm to 600 mm	1955A83	0000

Center Heads

Center heads identify the center on pipes, rods, and shafts.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

	Cast Iron
For Blade Lg.		Each
4"	1955A17	000000
6"	1955A18	00000
12" to 48"	1955A19	00000

Replacement Square Head Lockbolts

For Head Style	For Blade Lg.		Each
Center, Square	4"	1955A81	000000
Center, Square	6"	1955A82	00000
Center	6"	1955A85	00000
Center, Square, Protractor	12" to 36"/300 mm to 600 mm	1955A83	0000

Protractor Heads

Protractor heads measure angles.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

			Protractor		Cast Iron
For Blade Lg.	Reversible	Features	Angle Measured Range	Graduations (Numeric Increments)		Each
12" to 48"	No	Built-In Level	0° to 180°	1° (10°)	1955A29	0000000
12" to 48"	Yes	Built-In Level	0° to 180°	1° (10°)	1955A25	000000

Replacement Square Head Lockbolts

For Head Style	For Blade Lg.		Each
Center, Square, Protractor	12" to 36"/300 mm to 600 mm	1955A83	00000

Squares with Adjustable Blade


With Beveled Blade	Without Beveled Blade

Measure and mark material exactly where you need to with a sliding blade.

Etched—Etched graduation marks are wear resistant.

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

Beveled Blade—30°, 45°, and 90° squares include a separate beveled blade for measuring 30° and 45° angles.

						Blade			Graduation
	Angle Measured	Blade Lg.	Handle Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Color	Color	Type	Handle Material	Appearance	Includes		Each
Inch







				Chrome-Plated Steel

				30°, 45°, 90°	4"	2 1/2"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	3/4"	3/32"	Silver	Black	Etched	Cast Iron	Satin	Beveled Blade	8606A55	000000


				30°, 45°, 90°	6"	2 1/2"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	3/4"	3/32"	Silver	Black	Etched	Cast Iron	Satin	Beveled Blade	8606A57	00000
				90°	4"	2 1/2"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	3/4"	3/32"	Silver	Black	Etched	Cast Iron	Satin	—	8606A54	00000
				90°	6"	2 1/2"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	3/4"	3/32"	Silver	Black	Etched	Cast Iron	Satin	—	8606A56	00000

Replacement Square Head Lockbolts

		Each
Replacement Lockbolt	8606A61	00000

Long-Length Staff Gauges

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

							Graduation		Mounting Holes
	Lg. Measured Range, ft.	Length	Front Right Graduation Marks (Numeric Increments)	Wd.	Thk.	Color	Color	Type	No. of.	Dia.		Each
Inch—Bottom-to-Top Reading Direction







				Enamel-Coated Iron

				0 to 3.33	3.33 ft.	1/100" (1/10 ft.)	2 1/2"	1/16"	White	Black	Printed	5	3/16"	1975A14	000000


				3.33 to 6.66	3.33 ft.	1/100" (1/10 ft.)	2 1/2"	1/16"	White	Black	Printed	5	3/16"	1975A15	00000
				6.66 to 10	3.33 ft.	1/100" (1/10 ft.)	2 1/2"	1/16"	White	Black	Printed	5	3/16"	1975A16	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	6883N11	000000000
0 to 250	±0.003 mm	0.002	0.009	0.0035	Cast Iron	Aluminum	7"	4"	Dial Indicator, Micrometer	311-225	6883N12	00000000
0 to 450	±0.003 mm	0.002	0.006	0.0025	Cast Iron	Aluminum	7"	4"	Dial Indicator, Micrometer	311-245	6883N13	00000000

Heavy Duty Combination Squares

Built for welding and other heavy duty fabricating jobs, these squares have an extra-wide head and a large thumbwheel, so they’re easy to adjust and hold while wearing gloves. They combine the functionality of a try square, miter square, depth gauge, marking gauge, 90° level, and ruler in one tool. Add a clamp to the extra-wide head or use the included leveling tabs to hold material while welding. The tabs can also be used to set workpieces level to one another before fabricating. The fully recessed blade makes it easy to measure around obstacles.

Blades with Square Head with Built-In Level and Leveling Tabs


	Inch

Square head checks 90° angles.

Cast Iron Square Head—Squares with a cast iron head are durable and resist both scratches and dents. However, they’re more prone to corrosion than squares with zinc alloy heads.

Etched—Etched graduation marks are wear resistant.

				Blade				Graduation			Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.	Material	Color	Color	Type	Flange Thk.	Head Lg.		Each
Inch



		12"	1/8" (1"), 1/16" (1")	1/8" (1"), 1/16" (1")	1"	7/64"	Stainless Steel	Gold	Black	Etched	2"	5"	4998N12	0000000

High-Accuracy Combination Square Heads

Attach to High-Accuracy Combination Square Blades with the included lockbolts.

Square Heads

Square heads check 90° angles.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

Hardened Cast Iron—Hardened cast iron heads are more durable and last longer than cast iron heads.

	Combination Square Heads				Replacement Square Head Lockbolts
	For Blade Lg.	Features		Each		Each
Cast Iron



		12" to 24"	Built-In Level	21115A27	000000	21115A36	00000


		Hardened Cast Iron



				12" to 24"	Built-In Level	21115A28	00000	21115A36	0000

Center Heads

Center heads identify the center on pipes, rods, and shafts.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

Hardened Cast Iron—Hardened cast iron heads are more durable and last longer than cast iron heads.

	Combination Square Center Heads			Replacement Square Head Lockbolts
	For Blade Lg.		Each		Each
Cast Iron



		12" to 24"	21115A29	000000	21115A36	00000


		Hardened Cast Iron



				12" to 24"	21115A31	00000	21115A36	0000

Protractor Heads

Protractor heads measure angles.

Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc alloy heads.

	Combination Square Protractor Heads						Replacement Square Head Lockbolts
			Protractor
	For Blade Lg.	Reversible	Angle Measured Range	Graduations (Numeric Increments)		Each		Each
Cast Iron



		12" to 24"	Yes	0° to 180°	1° (10°)	21115A32	000000	21115A36	00000

High-Accuracy Combination Squares

Use these squares in place of your try square, miter square, depth gauge, height gauge, center-point finder, and level. 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

Square head checks 90° angles.

Hardened Cast Iron Square Head—Hardened cast iron 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 Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Appearance	Color	Color	Type	Head Lg.		Each		Each
Inch



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0025" to 0.0025"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	21115A14	0000000	21115A18	0000000

Replacement Square Head Lockbolts

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


	Inch

Square head checks 90° angles.

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

Hardened Cast Iron Square Head—Hardened cast iron 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 Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Appearance	Color	Color	Type	Head Lg.		Each		Each
Inch



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0025" to 0.0025"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	21115A13	0000000	21115A17	0000000

Replacement Square Head Lockbolts

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


	Inch

Square head checks 90° angles.

Protractor head measures angles.

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

Hardened Cast Iron Square Head—Hardened cast iron 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 Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Appearance	Color	Color	Type	Head Lg.		Each		Each
Inch



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.0025" to 0.0025"	1"	3/32"	Steel	Satin	Chrome, Silver	Black	Etched	4 1/2"	21115A11	0000000	21115A15	0000000

Replacement Square Head Lockbolts

Scratch-Resistant High-Accuracy Combination Squares

A titanium coating protects the blade against scratches and wear. Use these squares to replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. 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

Square head checks 90° angles.

Etched—Etched graduation marks are wear resistant.

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



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.002"	1"	3/32"	Titanium-Coated Steel	Gold	Black	Etched	4 1/2"	21155A34	0000000

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


	Inch

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		Cast Iron Square Head
	Blade Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Lg. Accuracy	Wd.	Thk.	Material	Color	Color	Type	Head Lg.		Each
Inch



		12"	1/32" (4/32"), 1/64" (8/64")	1/8" (1"), 1/16" (1")	-0.002" to 0.002"	1"	3/32"	Titanium-Coated Steel	Gold	Black	Etched	4 1/2"	21155A36	0000000