Right-to-Left Rulers | McMaster-Carr

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114 Products

About High-Quality Rulers

What separates a throwaway ruler from one you’ll keep for decades, which type is best for everyday use, and how to compare materials.

Adhesive-Back Rulers

Free up your hands when measuring length over and over—no more lining up rulers or tape measures. These rulers stick to everything from toolboxes to lathe beds for a permanent measuring guide.

Extra-Flexible Plastic

These rulers are flexible enough to conform to curved surfaces without snapping.

	Lg.	Front Graduations (Numeric Graduations)	Thk.	Color	No. of Segments		Each
Inch





			Right-to-Left Reading Direction

			1 ft.	1/32" (1")	1/2"	0.004"	Silver	1	1910A14	00000
			1 ft.	1/16" (1")	1/2"	0.004"	Clear	1	19325A31	0000
			1 ft.	1/16" (1")	1/2"	0.004"	Silver	1	1910A62	0000
			1 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Clear	1	19325A36	0000
			1 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	1	1910A21	0000
			1 1/2 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	1	1910A22	0000
			3 ft.	1/32" (1")	1/2"	0.004"	Silver	1	1910A27	0000
			3 ft.	1/16" (1")	1/2"	0.004"	Clear	1	19325A32	0000
			3 ft.	1/16" (1")	1/2"	0.004"	Silver	1	1910A63	0000
			3 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Clear	1	19325A37	0000


			3 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	1	1910A23	0000
			6 ft.	1/32" (1")	1/2"	0.004"	Silver	2	1910A28	00000
			6 ft.	1/16" (1")	1/2"	0.004"	Clear	2	19325A33	00000
			6 ft.	1/16" (1")	1/2"	0.004"	Silver	2	1910A64	00000
			6 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Clear	2	19325A38	00000
			6 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	2	1910A24	00000
			7 1/2 ft.	1/4" (1"), 1/4" (1")	3"	0.004"	Yellow	1	19415A17	00000
			9 ft.	1/32" (1")	1/2"	0.004"	Silver	3	1910A29	00000
			9 ft.	1/16" (1")	1/2"	0.004"	Clear	3	19325A34	00000
			9 ft.	1/16" (1")	1/2"	0.004"	Silver	3	1910A65	00000


			9 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Clear	3	19325A39	00000
			9 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	3	1910A25	00000
			12 ft.	1/32" (1")	1/2"	0.004"	Silver	4	1910A31	00000
			12 ft.	1/16" (1")	1/2"	0.004"	Clear	4	19325A35	00000
			12 ft.	1/16" (1")	1/2"	0.004"	Silver	4	1910A66	00000
			12 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Clear	4	19325A41	00000
			12 ft.	1/16" (1"), 1/16" (1")	1 1/4"	0.004"	Silver	4	1910A26	00000
			15 ft.	1/4" (1"), 1/4" (1")	3"	0.004"	Yellow	2	19415A18	00000
			18 ft.	1/16" (1"), 1/16" (1")	1"	0.004"	Silver	6	1910A76	00000
			24 ft.	1/16" (1")	1/2"	0.004"	Silver	8	1910A15	00000


			24 ft.	1/16" (1"), 1/16" (1")	1"	0.004"	Silver	8	1910A77	00000
			30 ft.	1/16" (1")	1/2"	0.004"	Silver	10	1910A16	00000
			36 ft.	1/16" (1"), 1/16" (1")	1"	0.004"	Silver	12	1910A78	00000
			48 ft.	1/16" (1"), 1/16" (1")	1"	0.004"	Silver	16	1910A79	000000
			60 ft.	1/16" (1"), 1/16" (1")	1"	0.004"	Silver	20	1910A81	000000


			Metric





							Right-to-Left Reading Direction

							1 m	1 mm (10 mm), 1 mm (10 mm)	1/2"	0.004"	White	1	8965A25	0000
							1 m	1 mm (1 cm), 1 mm (1 cm)	3/4"	0.004"	White	1	8965A35	0000
							1 m	1 mm (1 cm), 1 mm (1 cm)	1"	0.004"	White	1	8965A45	0000
							1 m	1 mm (10 cm)	1/2"	0.004"	White	1	8965A65	0000
							2 m	1 mm (10 mm), 1 mm (10 mm)	1/2"	0.004"	White	2	8965A26	00000
							2 m	1 mm (1 cm), 1 mm (1 cm)	3/4"	0.004"	White	2	8965A36	00000
2 m							1 mm (1 cm), 1 mm (1 cm)	1"	0.004"	White	2	8965A46	00000
2 m	1 mm (10 cm)						1/2"	0.004"	White	2	8965A66	00000
3 m	1 mm (10 cm)						1/2"	0.004"	White	3	8965A67	00000
4 m	1 mm (10 cm)	1/2"					0.004"	White	4	8965A68	00000

Extra-Flexible Steel

Combine the flexibility of plastic with the strength of metal. These rulers are bendy enough to conform to curved surfaces and durable enough to resist scrapes and scratches.

	Wd.	Thk.	Color	No. of Segments		Each
Inch





	Left-to-Right Reading Direction/Right-to-Left Reading Direction

	25 ft.	1/16" (1"), 1/16" (1")	1/32" (1"), 1/32" (1")	3/4"	0.0075"	Yellow	1	1909A23	000000




			Right-to-Left Reading Direction

			6 ft.	1/16" (1"), 1/16" (1")	1/32" (1"), 1/32" (1")	1/2"	0.0075"	White	1	1909A42	00000
			12 ft.	1/16" (1"), 1/16" (1")	1/32" (1"), 1/32" (1")	1/2"	0.0075"	White	1	1909A44	00000
			25 ft.	1/16" (1")	—	3/8"	0.0075"	Yellow	1	1909A18	00000
			25 ft.	1/8" (1"), 1/8" (1")	—	3/8"	0.0075"	Yellow	1	1909A24	00000
			50 ft.	1/16" (1")	—	3/8"	0.0075"	Yellow	1	1909A19	00000
			50 ft.	1/8" (1"), 1/8" (1")	—	3/8"	0.0075"	Yellow	1	1909A25	00000


			Inch/Metric





							Right-to-Left Reading Direction

							12 ft./3.6 m	1/16" (1"), 1 mm (1 cm)	1/32" (1")	1/2"	0.0075"	White	1	1909A56	00000


							Metric





											Right-to-Left Reading Direction

											3 m	1 cm (1 cm), 1 mm (1 cm)	—	1/2"	0.0075"	Yellow	1	1909A73	00000

Rigid Corrosion-Resistant Stainless Steel

Our most durable adhesive-back rulers. These rulers keep their shape and resist scrapes and scratches even if bumped with tools and machinery. Stick them to flat surfaces, such as bench tops.

Made of stainless steel, these rulers won't rust when splashed with water or wiped down with degreasers or cleaning solutions. Their graduations are etched and blackened with ink, so they won't rub off like printed graduations can.

	Thk.	Color	No. of Segments		Each
Inch





	Right-to-Left Reading Direction

	12"	1/16" (1"), 1/16" (1")	19/32"	3/64"	Silver	1	1909A85	000000
	20"	1/16" (1"), 1/16" (1")	19/32"	3/64"	Silver	1	1909A86	00000
	28"	1/16" (1"), 1/16" (1")	19/32"	3/64"	Silver	1	1909A87	00000
	40"	1/16" (1"), 1/16" (1")	19/32"	3/64"	Silver	1	1909A88	000000


	Metric





					Right-to-Left Reading Direction

					0.3 m	1 mm (1 cm), 1 mm (1 cm)	19/32"	3/64"	Silver	1	1909A94	00000
					0.5 m	1 mm (1 cm), 1 mm (1 cm)	19/32"	3/64"	Silver	1	1909A95	00000
					0.7 m	1 mm (1 cm), 1 mm (1 cm)	19/32"	3/64"	Silver	1	1909A96	00000
					1 m	1 mm (1 cm), 1 mm (1 cm)	19/32"	3/64"	Silver	1	1909A97	000000

Rulers

Your go-to rulers for everyday measuring. Whether metal for durability or wood for a classic feel, our rulers measure up to most tasks, from woodwork to textiles to rough machining.

Corrosion-Resistant Stainless Steel

Our most corrosion-resistant rulers. These rulers won't rust when rinsed, rained on, or wiped down with degreasers or cleaning solutions. They're hardened to prevent dents and scratches, so you can trust they'll last for years to come. Etched and filled with black ink, their graduations won't rub off like printed graduations can.

Calibration Certificate—When precision measurements are required for quality control or by regulation, use a ruler that includes a calibration certificate traceable to NIST. The certificate states that the ruler has passed a test for accuracy, so you can be confident your measurements are correct and consistent.

Length—For easy handling and storage, rulers that are 96" or longer come in multiple pieces that line up to create a complete ruler.

						Rulers		Rulers with Calibration Certificate
	Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.		Each		Each
Inch/Metric





				Right-to-Left Reading Direction

				12"/300 mm	1/32" (1"), 1/16" (1")	1 mm (10 mm), 1 mm (10 mm)	1"	1/32"	———	0	20265A46	000000
				24"/600 mm	1/32" (1"), 1/16" (1")	1 mm (10 mm), 1 mm (10 mm)	1"	1/32"	———	0	20265A461	000000
				36"/900 mm	1/32" (1"), 1/16" (1")	1 mm (10 mm), 1 mm (10 mm)	1"	1/32"	———	0	20265A462	000000
				48"/1,200 mm	1/32" (1"), 1 mm (1 cm)	—	1 1/8"	1/32"	89665A69	000000	———	0
				96"/2,400 mm	1/32" (1"), 1 mm (1 cm)	—	1 1/8"	1/32"	89665A199	000000	———	0
				144"/3,600 mm	1/32" (1"), 1 mm (1 cm)	—	1 1/8"	1/32"	89665A177	000000	———	0
				192"/4,800 mm	1/32" (1"), 1 mm (1 cm)	—	1 1/8"	1/32"	89665A188	000000	———	0

Lightweight Aluminum

Our economical option. These rulers are about as lightweight as plastic rulers, so they're convenient to carry from site to site. Although light, they're not flimsy—they resist snapping if knocked around in your toolbox. Plus, they'll keep their bright finish if frequently rinsed.

Length—For easy handling and storage, 4 meter rulers come in two pieces that line up to create a complete ruler.

					Rulers
	Lg., m	Front Graduations (Numeric Graduations)	Wd.	Thk.		Each
Metric





				Right-to-Left Reading Direction

				4	1 mm (1 cm), 1 cm (1 cm)	1 3/8"	3/32"	2363A55	000000

Easy-Read Rulers

From bright outdoor jobsites to dimly lit workshops, take measurements where standard metal rulers would be hard to see. The black finish on these rulers reduces glare, while the light-colored graduations pop against the dark background.

Lightweight Aluminum

Image of Product. Front orientation. Rulers. Easy-Read Rulers.

Our economical option. These rulers are about as lightweight as plastic rulers, so they’re convenient to carry from site to site. To keep them looking like new, an anodized coating guards them from daily wear and protects their finish if rinsed or rained on. Etched into the material, their graduations won't rub off like printed graduations can.

	Thk.	Wd.	Graduation Color		Each
Inch





	Right-to-Left Reading Direction

	12"	1/16" (1")	—	3/32"	1"	Silver	1970A311	000000
	12"	—	1/16" (1")	3/32"	1"	Silver	1970A411	0000
	24"	1/16" (1")	—	3/32"	1"	Silver	1970A321	00000
	24"	—	1/16" (1")	3/32"	1"	Silver	1970A421	00000
	36"	1/16" (1")	—	3/32"	1"	Silver	1970A331	00000
	36"	—	1/16" (1")	3/32"	1"	Silver	1970A431	00000
	48"	1/16" (1")	—	3/32"	1"	Silver	1970A341	00000
	48"	—	1/16" (1")	3/32"	1"	Silver	1970A441	00000
	60"	1/16" (1")	—	3/32"	1"	Silver	1970A351	00000
	60"	—	1/16" (1")	3/32"	1"	Silver	1970A451	00000


	72"	1/16" (1")	—	3/32"	1"	Silver	1970A361	00000
	72"	—	1/16" (1")	3/32"	1"	Silver	1970A461	00000
	96"	1/16" (1")	—	3/32"	1"	Silver	1970A371	00000
	96"	—	1/16" (1")	3/32"	1"	Silver	1970A471	00000
	144"	1/16" (1")	—	3/32"	1"	Silver	1970A381	000000
	144"	—	1/16" (1")	3/32"	1"	Silver	1970A481	000000


	Metric





					Right-to-Left Reading Direction

					50 cm	1 mm (1 cm)	—	3/32"	1"	Silver	1970A521	00000
					100 cm	1 mm (1 cm)	—	3/32"	1"	Silver	1970A531	00000
					150 cm	1 mm (1 cm)	—	3/32"	1"	Silver	1970A541	00000
					200 cm	1 mm (1 cm)	—	3/32"	1"	Silver	1970A551	00000

See-Through Rulers


Center Finding Style A	Center Finding Style B

Center Finding Style C

Line up these rulers exactly where you need them—they're clear plastic, so you'll never lose sight of what you're measuring. A staple of most sewers' kits, they're especially useful when working with intricate designs, lines, and patterns. All are laminated to protect their graduations from scratching and fading.

Center Finding—These rulers come with a center-finding scale, so you can quickly locate the center of workpieces without any math. Just align the scale so that the same measurement appears on both sides of the object—zero marks your center.

Red Graduation Marks—Easier to read than black graduation marks when measuring over black lines and text.

Stainless Steel Edge—Best for cutting and inking straight lines, these rulers have a stainless steel edge that guards the plastic from nicks and stains.

	Lg.	Front Graduations (Numeric Graduations)	Wd.	Thk.	Graduation Color	Material	Edge Material		Each
Inch with Center-Finding Scale



	A	12"	1/16" (1"), 1/16" (1"), 1/16", 1/16", 1/8" (1")	2"	1/32"	Red	Plastic	—	20345A25	00000
	A	18"	1/16" (1"), 1/16" (1"), 1/16", 1/16", 1/8" (1")	2"	1/32"	Red	Plastic	—	20345A28	0000
	B	12"	1/16" (1"), 1/16" (1"), 1/16", 1/16" (1")	1 1/2"	1/8"	Black	Plastic	Stainless Steel	20345A21	00000
	B	18"	1/16" (1"), 1/16" (1"), 1/16", 1/16" (1")	1 1/2"	1/8"	Black	Plastic	Stainless Steel	20345A22	00000


	Inch/Metric with Center-Finding Scale



			C	12"/30 cm	1/16" (1"), 1 mm (1 cm), 1/8" (1")	1"	1/32"	Red	Plastic	—	20345A35	0000

Center-Finding Rulers

Quickly locate the center of workpieces without any math. Just align these rulers so that the same measurement appears on both sides of the object—zero marks your center.

Corrosion-Resistant Stainless Steel

Image of Product. Front orientation. Rulers. Center-Finding Rulers.

These rulers won't rust when rinsed, rained on, or wiped down with degreasers or cleaning solutions. They're hardened to prevent dents and scratches, so you can trust they'll last for years to come. Etched and filled with black ink, their graduations won't rub off like printed graduations can.

						Rulers
	Lg.	Front Graduations (Numeric Graduations)	Back Graduations (Numeric Graduations)	Wd.	Thk.		Each
Inch





				Left-to-Right Reading Direction/Right-to-Left Reading Direction

				12"	1/16" (1"), 1/32" (1")	—	1 1/4"	1/32"	2346A23	000000
				18"	1/16" (1"), 1/32" (1")	—	1 1/4"	1/32"	2346A28	00000
				24"	1/16" (1"), 1/32" (1")	—	1 1/4"	1/32"	2346A25	00000
				36"	1/16" (1"), 1/32" (1")	—	1 1/4"	1/32"	2346A26	00000
				48"	1/16" (1"), 1/32" (1")	—	1 1/4"	1/32"	2346A27	00000


				Inch/Metric





								Left-to-Right Reading Direction/Right-to-Left Reading Direction

								18"/45 cm	1/16" (1"), 1/16" (1")	1 mm (1 cm), 1 mm (1 cm)	1 1/4"	1/32"	2346A31	00000
								24"/60 cm	1/16" (1"), 1/16" (1")	1 mm (1 cm), 1 mm (1 cm)	1 1/4"	1/32"	2346A32	00000
								36"/90 cm	1/16" (1"), 1/16" (1")	1 mm (1 cm), 1 mm (1 cm)	1 1/4"	1/32"	2346A33	00000

Pocket Center-Finding Rulers

Find the center of workpieces on the go—these rulers are no bigger than a pen to tuck into your pocket. They come with a clip to keep them from falling out or getting misplaced. To find a center, align them so that the same measurement appears on both sides of the object. Zero marks your center—no math required.

Lightweight Aluminum

About as lightweight as plastic rulers, these rulers are convenient to carry from site to site. They keep their bright finish even if frequently rinsed.

					Rulers
	Lg.	Front Graduations (Numeric Graduations)	Wd.	Thk.		Each
Inch





				Left-to-Right Reading Direction/Right-to-Left Reading Direction

				6"	1/32" (1"), 1/16" (1")	3/4"	3/64"	4892N12	00000


				Metric





								Left-to-Right Reading Direction/Right-to-Left Reading Direction

								16 cm	1 mm (1 cm), 1 mm (1 cm)	3/4"	3/64"	4892N13	0000

Tape Rulers

Like masking tape, these rulers stick to workbenches, saw tables, and other surfaces for hands-free measuring. Unwind them from their roll and rip or cut them to the length you need. When you're done measuring, peel them off and throw them away—they won't mark up your surface or leave behind a sticky residue.

The measurements on these rulers repeat every 3 ft. or 1 meter. For longer measurements, each repeated section includes an empty box, so you can write in your own number for reference.

Extra-Flexible Paper

Image of Product. Front orientation. ZoomedIn view. Rulers. Tape Rulers.

To ensure these rulers last, the paper is coated to resist absorbing water and fading in the sun.

	Wd.	Thk.	Color		Each
Inch





	Left-to-Right Reading Direction/Right-to-Left Reading Direction

	105 ft.	3 ft.	1/8" (1"), 1/8" (1")	3/4"	0.004"	Yellow	1937A23	000000


	Metric





					Left-to-Right Reading Direction/Right-to-Left Reading Direction

					32 m	1 m	2 mm (1 cm), 2 mm (1 cm)	3/4"	0.004"	White	1937A24	00000

Half-Measure Adhesive-Back Rulers

Take division out of the equation when building half-scale models and prototypes. The distance between the graduations on these rulers is half the printed measurement—just use your object's true dimensions to get a model half its size. Stick these rulers to your bench top for a permanent, hands-free measuring guide.

Extra-Flexible Plastic

Image of Product. Front orientation. Contains Annotated. Rulers. Half-Measure Adhesive-Back Rulers.

These rulers are flexible enough to conform to curved surfaces without snapping.

	Thk.	Color	No. of Segments		Each
Inch





	Right-to-Left Reading Direction

	1 1/2	1/8" (1"), 1/8" (1")	1"	0.004"	Silver	1	19425A44	00000
	3	1/8" (1"), 1/8" (1")	1"	0.004"	Silver	1	19425A45	0000
	6	1/8" (1"), 1/8" (1")	1"	0.004"	Silver	2	19425A46	00000
	7 1/2	1/8" (1"), 1/8" (1")	1"	0.004"	Silver	2	19425A62	00000
	11 1/4	1/8" (1"), 1/8" (1")	1"	0.004"	Silver	3	19425A64	00000

Heavy Duty Levels

These sturdy levels last longer than typical levels, even if you use them frequently. With four solid sides that form a box shape, they stay flat on surfaces without wobbling and won’t twist or deform over time. The aluminum housing and durable plastic vial won't crack if you step on them or drop them off a ladder or tool tray.

Levels with Center-Finding Ruler—Quickly locate the center of your workpiece without any math. These levels have graduation marks that start at zero in the middle of the level. Just align them so that the increments are the same on both sides of the object you’re measuring —zero marks your center.

					No. of Vials			Housing
	Lg.	Wd.	Ht.	Sensitivity	Horizontal	Vertical	Vial Material	Material	Color	Graduations (Numeric Graduations)		Each
Levels with Center-Finding Ruler



		24"	1"	2"	0.006"/1 ft., 1 min/0.1"	1	2	Plastic	Aluminum	Yellow	1/16" (1"), 1/16" (1")	4175N101	000000
		48"	1"	2"	0.006"/1 ft., 1 min/0.1"	1	2	Plastic	Aluminum	Yellow	1/16" (1"), 1/16" (1")	4175N102	000000