Pocket Scales | McMaster-Carr

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41 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.

Pocket Rulers

No bigger than a pen, these rulers slip into your pocket for measuring on the go. Clip them to your pocket to keep them from falling out or getting misplaced. The clip doubles as a sliding depth gauge, so you can measure the inside of counterbores and other holes.

Corrosion-Resistant Stainless Steel

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)	Wd.	Thk.	End Shape		Each
Inch/Metric







				Left-to-Right Reading Direction

				6"/150 mm	1/64" (8/64"), 1 mm (1 cm)	1/2"	1/64"	Round	2388A57	00000


				6"/150 mm	1/32" (1"), 1 mm (10 mm)	1/2"	1/64"	Round	6813A71	0000
				6"/150 mm	1/16" (1"), 1 mm (10 mm)	1/4"	1/64"	Square	6813A64	0000
				6"/150 mm	1 mm (10 mm), 1/16" (1")	1/2"	1/64"	Round	2388A51	0000


				Inch







								Left-to-Right Reading Direction

								6"	1/32" (4/32"), 1/64" (8/64")	1/2"	1/64"	Round	6813A61	0000


								6"	1/32" (1"), 1/64" (8/64")	1/4"	1/64"	Square	6813A63	0000


								Metric







												Left-to-Right Reading Direction

												150 mm	0.5 mm (10 mm), 1 mm (10 mm)	1/2"	1/64"	Round	6813A62	0000

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.	End Shape		Each
Inch







				Left-to-Right Reading Direction

				6"	1/16" (1") 1/32" (8/32")	3/4"	3/64"	Square	6813A81	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

Compact Digital-Display Bench-Top Scales with Flip Cover

The attached cover protects the scale while you carry it. The tare function lets you reset the scale to zero after placing a container on the platform.

				Platform				Overall				Batteries
	Wt. Cap.	Accuracy	Graduations	Wd.	Dp.	Shape	Material	Ht.	Wd.	Dp.	Housing Material	Included	Size	No. Req.	Features		Each
Ounces, Grams, Carats, Grains



		17 oz. (500 g)	±0.02 oz. (±0.3 g)	0.005 oz. (0.1 g)	2 3/4"	2"	Rectangle	Stainless Steel	1"	4 1/2"	3"	Plastic	Yes	AAA	2	Tare Function	1722T71	0000000

Compact Digital-Display Bench-Top Scales

These scales are small enough to carry with you for measurements on the go.

Tare Function—Scales with tare function let you reset the scale to zero after placing a container on the platform.

				Platform				Overall				Batteries
	Wt. Cap.	Accuracy	Graduations	Wd.	Dp.	Shape	Material	Ht.	Wd.	Dp.	Housing Material	Included	Size	No. Req.	Features		Each
Ounces, Grams



		42 oz. (1,200 g)	±0.2 oz. (±10 g)	0.1 oz. (2 g)	4"	5 1/2"	Rectangle	Plastic	1"	4"	6"	Plastic	Yes	CR2032	1	Tare Function	1722T61	0000000


		Ounces, Grams, Troy Ounces, Pennyweights



				4 oz. (120 g)	±0.007 oz. (±0.2 g)	0.005 oz. (0.1 g)	2 1/2"	2.6"	Rectangle	Plastic	1"	3"	4"	Plastic	Yes	CR2032	2	—	1722T13	00000


				8.5 oz. (250 g)	±0.007 oz. (±0.2 g)	0.005 oz. (0.1 g)	2 1/2"	2.6"	Rectangle	Plastic	1"	3"	4"	Plastic	Yes	CR2032	2	—	1722T14	00000

Pocket Drafting Rulers

Triangle

For scaled-down drawings on the go, these rulers are no bigger than a pen to slip into your pocket. Sketch everything from roads to buildings to floor plans—they include the standard scales for architects or engineers. All have beveled edges, so you can be confident your lines will be accurate and consistent no matter what angle you view the ruler from.

Triangle—To quickly identify the scale you need, these rulers have a different-colored groove on each of their three sides.

	Blade Lg.		Each
Inch







	Triangle

	Architects'	3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 3, 16	Aluminum	6"	4923N11	000000


	Engineers'	10ths, 20ths, 30ths, 40ths, 50ths, 60ths	Aluminum	6"	4923N13	00000


	Inch/Metric







					Triangle

					Architects', Engineers'	1/8, 1/4, 16, 1:500, 1:100, 10ths, 50ths	Aluminum	6"	4923N12	00000

Multifunction Tape Measures

Measure distance, level objects, and draft circles with one tool. A jack of all trades, these tape measures include a vial level and a compass for drawing circles up to 20 ft. in diameter. You don’t have to crimp the blade to measure inside drawers and other objects—a top window shows the length from the tip of the blade to the back of the case.

						Blade		Case
	Lg.	Graduations	First Foot Graduations	Numeric Graduations	Tip Style	Wd.	Material	Material	Color		Each
Manual Blade Lock



		10 ft./3 m	1/16", 1 mm	1/32"	1", 1 ft., 1 cm	Hook	1/2"	Coated Steel	Plastic	Black	2184A12	000000

Pocket Tape Measures

No bigger than a pack of gum, these tape measures slip into your pocket or hook to your key chain for go-anywhere convenience.

Lufkin

Nonlocking Blade Lock—Pull the blade out and hold it in place between your fingers. These free-moving tape measures are best for taking frequent, small measurements.

Coated Steel Blade—A coating on the blade prevents the graduations from wearing or scratching off.

Chrome-Plated Steel Blade—Our most durable blades. The hard chrome plating guards them from scratches, wear, and rust.

						Blade		Case
	Lg.	Graduations	First Foot Graduations	Numeric Graduations	Tip Style	Wd.	Material	Material	Color		Each
Nonlocking Blade Lock



		6 ft./2 m	1/16", 1 mm	—	1", 1 cm	Hook	1/4"	Coated Steel	Chrome-Plated Plastic	Silver	20105A101	000000


		6 ft.	1/16"	1/32"	1"	Hook	1/4"	Coated Steel	Plastic	Black	20105A14	00000
		6 ft.	1/16"	1/32"	1"	Hook	1/4"	Coated Steel	Plastic	Orange	20105A65	0000
		8 ft.	1/32"	1/32"	1", 1 ft.	Hook	1/2"	Coated Steel	Chrome-Plated Plastic	Silver	20105A102	00000
		10 ft./3 m	1/16", 1 mm	—	1", 1 cm	Hook	1/4"	Coated Steel	Plastic	Black	20105A22	00000
		10 ft.	1/16"	1/32"	1"	Hook	1/4"	Coated Steel	Plastic	Black	20105A18	00000
		12 ft.	1/16"	—	1"	Hook	1/2"	Chrome-Plated Steel	Chrome-Plated Plastic	Silver	1968A54	00000
		12 ft.	1/10"	—	1"	Hook	1/2"	Chrome-Plated Steel	Chrome-Plated Plastic	Silver	1968A67	00000

Digital-Display Spoon Scales

Weigh liquids, powders, or crystals as you transfer them from one container to another with these spoons. A digital screen on the handle displays the weight of your material to the nearest 0.1 g or 0.005 oz. For measuring volume, the head is marked in 5-ml increments up to 30 ml. Head is corrosion resistant and can be removed from the handle for cleaning. Spoons include a traceable calibration certificate to NIST standards.

							Batteries
	Wt. Cap.	Capacity, ml	Accuracy	Graduations	Overall Lg.	Material	Included	Size	No. Req.	Features	Certificate Type		Each
Ounces, Grams



		10.58 oz. (300 g)	32	±0.007 oz. (±0.2 g)	0.005 oz. (0.1 g) (5 ml)	9"	ABS	Yes	AAA	2	Tare Function	Calibration Certificate Traceable to NIST	3475N11	000000

Pocket Digital Angle Indicators

At 2 _1/4" square and 1" wide, this angle indicator easily fits into your pocket. Choose an alternate zero point with the push of a button.

				Overall					Batteries
	Angle Measured Range	Accuracy	Angle Numeric Increments	Lg.	Wd.	Ht.	Material	Digital Display Type	Included	No. Req.	Size	Features		Each
Magnetic Base



		-180° to 180°	±0.2°	0.1°	2 1/4"	1"	2 1/4"	Aluminum	LCD	No	1	AAA	Automatic Shutoff	3353A67	000000

Pocket Levels


Levels	Levels with Pocket Clip

Magnetic Levels	Magnetic Levels with Belt Clip

About the size of a pen, keep these levels in your pocket for any spur-of-the-moment leveling.

Levels with Pocket Clip—Hook these levels onto shirt pockets, notebooks, or clipboards for easy access.

Magnetic Levels—Stick to metal surfaces for hands-free leveling.

Belt Clip—Clip these levels to your belt for easy access as you check equipment around your facility.

Starrett—These levels are machined in the U.S. by Starrett, one of the most trusted names in precision measuring tools.

							Housing
	Lg.	Wd.	Ht.	Sensitivity	No. of Horiz. Vials	Vial Material	Material	Color	Mfr.	Mfr. Model No.		Each
Levels



		2 1/2"	3/8"	3/8"	0.104"/1 ft., 30 min/0.1"	1	Glass	Brass	Silver	Starrett	135A	7209N11	000000


		3 1/2"	1/2"	1/2"	0.073"/1 ft., 20 min/0.1"	1	Glass	Brass	Silver	Starrett	135B	7209N12	00000


		Levels with Pocket Clip



				5"	1/2"	5/8"	0.133"/1 ft., 38 min/0.1"	1	Plastic	Plastic	White	—	—	2034A15	0000


				Magnetic Levels



						4"	5/8"	5/8"	0.108"/1 ft., 30 min/0.1"	1	Plastic	Aluminum	Red	—	—	2182A24	00000


						Magnetic Levels with Belt Clip



								3"	3/4"	1 1/2"	0.043"/1 ft., 12 min/0.1"	1	Plastic	Aluminum	Yellow	—	—	6747N11	00000

Compact Dial Lever Variance Indicators

A slim design lets you measure in tight spots. Also known as test indicators, these variance indicators have a lever-style contact point that pivots as it touches a surface. They also have a balanced dial with positive values on one side and negative values on the other. This makes them great for measuring if a part is above or below a certain tolerance. All have jeweled bearings for high sensitivity, wear resistance, and a long service life.

Horizontal Orientation


	Side View

					Dial		Contact Point			Overall
	Distance Measured	Measuring Increments	Accuracy	Mounting Stem Dia.	Dia.	Reading Inch	Dia.	Lg.	Swivel Angle	Lg.	Dp.		Each
Stem Mount







				Jeweled Bearing

				0" to 0.01"	0.0001"	±0.0002"	3/8"	1 5/32"	0-5-0	0.078"	0.6"	220°	4 3/32"	1"	7704N12	0000000


				0" to 0.02"	0.0005"	±0.0005"	3/8"	1 5/32"	0-10-0	0.078"	1.34"	220°	4 13/16"	1"	7704N11	000000

Low-Light Pocket Levels

Keep these levels in your pocket to align surfaces in dimly lit areas. The vial on these levels illuminates, making them easy to read in the dark. Rest them on flat surfaces or fit the side with the V-shaped indentation around pipes and curved shafts.

Magnetic—Stick to metal surfaces for hands-free leveling.

Glow-In-The-Dark Vials—Expose these vials to ambient light to charge them and they'll stay visible in dark areas, no batteries needed.

							Housing
	Lg.	Wd.	Ht.	Sensitivity	No. of Horiz. Vials	Vial Material	Material	Color		Each
Magnetic Levels with Glow-In-The-Dark Vials



		2 5/8"	7/8"	1 5/8"	0.120"/1 ft., 34 min/0.1"	1	Plastic	Plastic	Black/Red	6724N11	000000

Pocket Digital Angle Indicators with Level

At 2 _1/4" square and 1" wide, this angle indicator easily fits into your pocket. It also shows level on the display and has a hold button that freezes the reading. Choose an alternate zero point with the push of a button. The display pops up for easy viewing. A V-groove provides stability on curved surfaces.

				Overall						Batteries
	Angle Measured Range	Accuracy	Angle Numeric Increments	Lg.	Wd.	Ht.	Material	Color	Digital Display Type	Included	No. Req.	Size	Features		Each
Magnetic Base



		-180° to 180°	±0.2°	0.1°	2 1/4"	1"	2 1/4"	Plastic	Black	LCD	No	2	AAA	Level, V-Groove, Display-Freezing Button, Automatic Shutoff	3353A78	000000

Pocket Remote-Reading Digital Angle Indicators

To measure angles from a distance and hear the measurement read aloud, download an app to connect your device to these angle indicators. At 2 _1/4" square and 1" wide, they fit easily in your pocket. Push the zero button to calibrate these indicators to any surface.

				Overall					Batteries
	Angle Measured Range	Accuracy	Angle Numeric Increments	Lg.	Wd.	Ht.	Material	Digital Display Type	Included	No. Req.	Size	Data Connection	Operating System Compatibility	Features		Each
Magnetic Base



		-180° to 180°	±0.2°	0.1°	2 1/4"	1"	2 1/4"	Aluminum	LCD	No	1	AAA	Bluetooth	Android 4.3 or Later iOS 9.0 or Later macOS 11.0 or Later watchOS 4.0 or Later	Automatic Shutoff	4907N11	000000

Pocket Diameter-Measuring Tape Measures

For quick diameter measurements on the go, these tape measures are as small as a pack of gum to tuck into your pocket. There's no math involved—just wrap the blade around your cable, pipe, or other cylindrical object. The number that overlaps with zero is your diameter. These tape measures are ideal for already mounted objects since you don't need to take your system apart. Also known as tree tapes.

Automatic Blade Return—The blade zips back into the case when you let go.

Nonlocking Blade Lock—Pull the blade out and hold it in place between your fingers. These free-moving tape measures are best for taking frequent, small measurements.

Chrome-Plated Metal Case—Choose metal cases for your toughest industrial jobs, from construction to machining. These cases resist breaking due to hard hits and drops. However, they're heavier to carry around than plastic cases.

	Dia.							Blade			Case
	Measured	Graduations	Lg.	Graduations	First Foot Graduations	Numeric Graduations	Tip Style	Wd.	Material	Lock Type	Material	Color		Each
Automatic Blade Return



		1/4" to 23"	1/100"	6 ft.	1/16"	1/32"	1"	Loop	1/4"	Coated Steel	Nonlocking	Chrome-Plated Metal	Silver	6822A12	000000


		1/4" to 23"	1/64"	6 ft.	1/16"	1/32"	1"	Loop	1/4"	Coated Steel	Nonlocking	Chrome-Plated Metal	Silver	6822A17	00000
		5 mm to 635 mm	1 mm	2 m	1 mm	—	1 cm	Loop	1/4"	Coated Steel	Nonlocking	Chrome-Plated Metal	Silver	6822A13	00000