Pipe Layout Guides | McMaster-Carr

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For Contour Length

34 Products

Pipe Size Chart/Rulers

Measure outer diameter and mark lines around pipe. A pipe size conversion chart is printed on these chart/rulers. They’re fiber-reinforced rubber for grease, oil, gasoline, and salt water resistance.

	Lg.	Wd.	Thk.	Measuring Lg.	Graduations (Numeric Graduations)	Color	Graduation Color	Max. Temp., ° F		Each
Rubber



	1" to 6", 2 mm to 60 cm	30"	2 5/8"	3/64"	28"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	8991A71	000000


	2" to 16", 2 mm to 78 cm	60"	3 7/8"	3/64"	36"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	8991A73	00000
	6" to 30", 2 mm to 77 cm	120"	5 1/4"	3/64"	36"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	8991A75	00000

Contour Markers

Lay out pipe and structural steel for any type or size of pipe fitting—elbows, tees, and wyes of all angles. These markers are lightweight aluminum.

	Angle Measured Range	Graduations (Angle Increments)	Mount Type	Marker Type	Includes		Each
Anodized Aluminum



	1 1/2" to 18"	0° to 90°	2.5° (10°)	Magnet	Soapstone Crayon	Calibrated Protractor Dials, Holder for Soapstone Crayon, Level, Magnetic Base, Triple-Jointed Marking Arm	7981A1	0000000


	8" to 48"	0° to 90°	2.5° (10°)	Magnet	Soapstone Crayon	Built-in Bubble Level, Calibrated Protractor Dials, Holder for Soapstone Crayon, Magnetic Base, Triple-Jointed Marking Arm	7981A3	000000

Pipe Joiners for Gasketed Pipe

Connect heavy and difficult-to-position gasketed pipe by yourself—no need for powered equipment. Chains align the pipe, and the lever forces one pipe into the socket end of another.

For Pipe
Size	OD	Material	Chain Cap., lb.	Handle Lg.	Body Material	Handle Material	Chain Material	Includes		Each
3 1/2 to 14	4.016" to 13.976"	Concrete, Iron, PVC, Vitrified Clay	1,600	27" to 54"	Powder-Coated Iron	Zinc-Plated Steel	Zinc-Plated Steel	One Adjustable Handle Two 12-ft. Lg. Chains Two Grab Hooks	4051N11	0000000

Pipe Flange Aligner Pins with Horizontal Level

Ensure horizontal alignment of pipe flanges with a level rod that runs between two alignment pins. One pin in each pair has a level for vertical alignment. Insert these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes.

	Aligner Connection Method	Rod Lg.		Each
Steel



	1/2" to 1 7/16"	Screw Together	10"	2745A241	0000000


	1/2" to 1 15/16"	Screw Together	18"	2745A242	000000

Magnetic Pipe Flange Aligners with Level

Ensure an even seal around your flange—these tools align and level flanges in a single step. The strong magnets make sure your bolt holes are perfectly inline horizontally and that your flange isn’t tilted. If your flange is made of stainless steel or another nonmagnetic material, secure these aligners using the included threaded cones.

	For Max. Flange Hole Ctr.-to-Ctr. Distance	Level Lg.	Aligner Connection Method	Includes	Cone Material	Magnet Material	Container Type		Each
Aluminum Body



	1/2" to 2"	9 1/2"	10 1/2"	Magnetic	Threaded Cones	Steel	Neodymium	Carrying Case	7049N11	0000000

Pipe Flange Aligners with Protractor

Line up two pipe flanges and determine pipe angle with the included nut-and-bolt pins, level, and protractor. Flange holes align as you tighten the pins.

	Angle Measured Range	Graduations (Angle Increments)	For Distance Between Bolt Holes		Each
Aluminum



	3/16" to 1 3/4"	0° to 90°	2.5° (2°)	2" to 5 1/2"	2342A11	0000000

Center-Locating Punches for Curved Surfaces

Locate and mark the centerline on rods, tubes, and pipes, lay out keyways, and establish angles for connections.

Manual—Manual locators are for use with a hammer. Gently strike the rod to mark the center.

Spring Loaded—Spring-loaded locators mark the center with the pull of a trigger.

Adjustable Dial Protractor—Locators with an adjustable dial protractor aid in establishing marks for angled connections.

Angle Measured Range	Graduations	Angle Numeric Increments	For Min. Pipe OD	Material	Punch Material	Includes	Features		Each



Manual	0° to 90°	2.5°	10°	1/2"	Aluminum	Steel	Adjustable Dial Protractor	Bubble Level	2195A1	0000000


Spring Loaded	0° to 90°	2.5°	10°	1"	Aluminum	Steel	Adjustable Dial Protractor	Bubble Level	2195A2	000000

Replacement Levels

		Each
Replacement Dial/Level Assembly	2195A11	000000

Contour Gauges

Transfer contours, patterns, and shapes for applications such as fitting floor tile and installing pipe insulation. A series of narrow probes slide within a frame to duplicate any shape.

For Contour
Lg.	Wd.	Probe Material		Each
5 1/4"	2"	Stainless Steel	2181A12	000000
10"	1 1/4"	Plastic	19065A32	00000

Stepped Pipe Flange Aligner Pins

Each step on these aligner pins matches common bolt holes on pipe flanges, so they're more precise than conical aligner pins and don’t require nuts. Press the pair of pins into mated flanges to make sure the flanges are aligned. Once two sets of holes are aligned, you'll know the rest of the holes are as well. Made of durable chrome-plated steel, they'll hold their shape over time and resist rust.

	Lg.		Pair
Chrome-Plated Steel



	3/8" to 3/4"	3 5/8"	7356N13	000000


	3/4" to 1 1/4"	5 1/2"	7356N12	00000
	3/4" to 1 3/8"	8"	7356N11	00000

Pipe Flange Aligner Pins

Insert a pair of these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes. One pin in each pair has a level for vertical alignment. Use a separate level to align the flange horizontally. Also known as two-hole pins.

4 1/2" Lg. Extension—Pins with a 4 ½” length extension let you increase the length of your pins to align thicker flanges.

Two Couplings—Use the included couplings to connect the extension to your pins.

	For Flange
	Hole Dia.	Thk.	Aligner Connection Method	Includes		Pair
Steel



		5/16" to 15/16"	1"	Screw Together	—	2298A21	000000


		1/2" to 1 7/16"	2 1/2"	Screw Together	—	2298A14	00000
		1/2" to 1 15/16"	4"	Screw Together	—	2298A15	000000
		5/8" to 3"	9"	Screw Together	4 1/2" Lg. Extension, Two Couplings	2298A22	000000

Replacements for Pipe Flange Aligners

For Flange Hole Dia.	Material	Lg.		Each
5/8" to 3"	Steel	1"	2298A25	00000

For Flange Hole Dia.	Material	Lg.		Each
5/8" to 3"	Steel	2 7/8"	2298A23	00000
5/8" to 3"	Steel	4 1/2"	2298A24	0000

Magnetic Pipe Flange Aligner Pins

Swiftly and accurately align pipe flange bolt holes without the hassle of threads. These pins have strong magnets that snap together. Insert them into adjacent bolt holes to help make sure flanges are parallel before connecting pipes. Also known as two-hole pins.

For 2 3/4" Flange Thickness—Pins for 2 _3/4" thick flanges can be used with pipe flange aligner extensions (sold separately) to lengthen their reach for flanges up to 3 _1/2″ thick.

	Pipe Flange Aligners						Pipe Flange Aligner Extensions
	For Flange
	Hole Dia.	Thk.	Aligner Connection Method	Magnet Material		Pair	Lg.		Each
Steel



		5/16" to 7/8"	7/8"	Magnetic	Neodymium	7065N11	000000	—	———	0


		1/2" to 1 7/16"	1 3/8"	Magnetic	Neodymium	7065N12	000000	—	———	0
		3/4" to 1 15/16"	2 3/4"	Magnetic	Neodymium	7065N13	000000	1 3/4"	7065N14	000000

Pipe Contour Gauges


Push Down	Slide Up and Mark

Probes take the shape of a pipe joint so you can transfer the exact outline to the pipe before you cut.

For Pipe
Size	OD	Probe Material		Each
1	1 5/16"	Stainless Steel	7317A71	000000
1 1/4	1 5/8"	Stainless Steel	7317A72	00000
1 1/2	1 7/8"	Stainless Steel	7317A73	00000
2	2 3/8"	Stainless Steel	7317A74	00000
2 1/2	2 7/8"	Stainless Steel	7317A75	000000