Wire Measurers | McMaster-Carr

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Material OD

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EAR99

DFARS Specialty Metals

RoHS

REACH

Pipe Size

For Wire Gauge

Wire Diameter

Coil ID

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Maximum Length Measured

Coil Weight Capacity

For Pipe Fitting Size

Width

Screw Size

For Electrical Wire Gauge

For Use On

For Gauge System

U.S. Standard Iron and Steel Gauge

U.S. Steel Wire Gauge

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36 Products

Build-Your-Own Wire, Rope, and Cord Length Measurers

Combine a counter, feeder reel, coiler reel, and stand to create a wire, rope, and cord length measurer.

Counters


Counter for Cords and Rope	Counter for Wire, Cable, and Hose	Counter for Wire	Counter for Wire with Cutter

Counters measure material as you thread it through the internal wheels. These counters add and subtract. Mount them on a pedestal or floor stand (sold separately).

Polyurethane-Coated Steel Wheel—Polyurethane-coated wheels are for PTFE-coated wire and fiber-optic cable.

	Material OD		Each
Feet/Inches







	Steel Wheel

	Cords, Rope	9,999	—	1/4" to 3/4"	00000000	0000000


	Wire	9,999	—	1/64" to 7/8"	00000000	000000
	Wire	9,999	Cutter	1/64" to 7/8"	00000000	000000
	Wire, Cable, Hose	99,999	—	1/8" to 2"	00000000	00000000




			Polyurethane-Coated Steel Wheel

			Wire	9,999	—	1/64" to 7/8"	00000000	00000000


			Wire	9,999	Cutter	1/64" to 7/8"	00000000	00000000
			Wire, Cable, Hose	99,999	—	1/8" to 2"	00000000	00000000

Reels


Feeder Reels	Coiler Reels

Feeder Reels—Feeder reels hold material before it's threaded through a counter. Wind material around adjustable pins on the reel, or place spooled material on the _1/2" diameter spindle.

Coiler Reels—Coiler reels gather material once it has passed through a counter. These reels have a hand crank and collapse for storage.

	For Coil ID
	Min.	Max.	For Max. Coil OD	Coil Lg. Cap. @ Material Thk.	Coil Wt. Cap., lb.	For Use With	Mounting Location	Includes		Each
Feeder Reels



		6 1/2"	10 1/2"	15"	—	75	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	0000000	0000000


		6 1/2"	18 1/2"	25"	—	120	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000


		Coiler Reels



				—	8"	—	120 ft. @ 1/2", 475 ft. @ 1/4"	50	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000


				—	8"	—	120 ft. @ 3/8", 70 ft. @ 1/2"	40	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000
				—	12"	—	120 ft. @ 3/4", 270 ft. @ 1/2"	75	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000
				—	12"	—	975 ft. @ 1/2"	75	Cords, Rope, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000
				—	16"	—	100 ft. @ 1", 190 ft. @ 3/4"	100	Cords, Rope, Wire, Cable, Hose	Bench	Bench-Mount Pedestal	00000000	000000

Stands


Bench-Mount Pedestal	Floor-Mount Stand for Cords, Rope, and Wire	Floor-Mount Stand for Wire, Cable, and Hose

Measuring Component	For Use With	Mounting Location	Ht.	Each
Pedestal	Cords, Rope, Wire	Bench	14"	000000
Stand	Cords, Rope, Wire	Floor	24"	000000
Stand	Wire, Cable, Hose	Floor	31" to 49"	00000000

All-in-One Identifiers

Find tube, pipe, fastener, wire, and drill bit sizes with one tool.

For Pipe Size	For Pipe Fitting Size	Wd.	Ht.		Each







Plastic

Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/32", 3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2", 65 Ga., 60 Ga., 55 Ga., 50 Ga., 45 Ga., 40 Ga., 35 Ga., 30 Ga., 25 Ga., 20 Ga., 15 Ga., 10 Ga., 5 Ga., A, F, K, P, U, Z	1/16, 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	1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	10 1/2"	3 1/2"	00000000	00000


Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8"	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	1/8, 1/4, 3/8, 1/2, 3/4, 1	8 11/16"	4 1/4"	00000000	0000

Wire, Rope, and Cord Length Measurers


Bench Mount	Floor Mount

Feed wire through the wheels inside the included counter to take measurements. The counter adds and subtracts. Wind your wire around adjustable pins on the feeder reel, or place spooled wire on the _1/2" diameter spindle. Gather it on the coiler reel once it has passed through the counter. Coiler reels have a hand crank and collapse for storage.

Polyurethane-Coated Steel Wheel—Polyurethane-coated wheels are for PTFE-coated wire and fiber-optic cable.

						Feeder Reel			Coiler Reel
	For Use With	Mounting Location	Max. Lg. Measured, ft.	Includes	Material OD	Max. Coil OD	Coil ID	Wt. Cap., lb.	Coil ID	Coil Cap.	Wt. Cap., lb.	Pedestal Ht.	Floor Stand Ht.		Each
Feet/Inches







				Steel Wheel

				Wire	Bench	9,999	Counter, Feeder Reel, Coiler Reel, Floor Stand, Two Pedestals	1/64" to 7/8"	25"	6 1/2" to 18 1/2"	120	12"	270 ft. @ 1/2"	75	14"	—	00000000	000000000


				Wire	Floor	9,999	Counter, Feeder Reel, Coiler Reel, Floor Stand, Two Pedestals	1/64" to 7/8"	25"	6 1/2" to 18 1/2"	120	12"	270 ft. @ 1/2"	75	14"	24"	00000000	00000000




						Polyurethane-Coated Steel Wheel

						Wire	Bench	9,999	Counter, Feeder Reel, Coiler Reel, Floor Stand, Two Pedestals	1/64" to 7/8"	25"	6 1/2" to 18 1/2"	120	12"	270 ft. @ 1/2"	75	14"	—	00000000	00000000


						Wire	Floor	9,999	Counter, Feeder Reel, Coiler Reel, Floor Stand, Two Pedestals	1/64" to 7/8"	25"	6 1/2" to 18 1/2"	120	12"	270 ft. @ 1/2"	75	14"	24"	00000000	00000000

Metal Gauges

Read gauge numbers on one side of these gauges and their decimal equivalents on the other.

For American Wire Gauge—Gauges using the American Wire Gauge system show the same markings as Brown & Sharpe gauges.

For U.S. Steel Wire Gauge—Gauges using the U.S. Steel Wire Gauge system show the same markings as Washburn & Moen and American Steel and Wire Co. gauges.

	For Use On	For Sheet Metal Ga.	For Electrical Wire Ga.	For Steel Wire Ga.	For Wire Dia./Sheet Thk.	Dia.		Each
Steel



	U.S. Standard Iron and Steel Gauge	Iron, Steel	36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0	—	—	0.007", 0.0078", 0.0085", 0.0093", 0.01", 0.0109", 0.0125", 0.014", 0.0156", 0.017", 0.0187", 0.0218", 0.025", 0.028", 0.0312", 0.0343", 0.0375", 0.0437", 0.05", 0.056", 0.0625", 0.07", 0.078", 0.0937", 0.109", 0.125", 0.14", 0.156", 0.172", 0.1875", 0.203", 0.2187", 0.234", 0.25", 0.263", 0.281", 0.3125"	3 1/4"	0000000	000000


	American Wire Gauge	Aluminum, Brass, Copper	—	36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0	—	0.005", 0.0056", 0.0063", 0.007", 0.008", 0.009", 0.01", 0.011", 0.012", 0.014", 0.016", 0.018", 0.02", 0.022", 0.025", 0.028", 0.032", 0.036", 0.04", 0.045", 0.051", 0.057", 0.064", 0.072", 0.081", 0.091", 0.102", 0.114", 0.128", 0.144", 0.162", 0.182", 0.204", 0.229", 0.257", 0.289", 0.325"	3 1/4"	00000000	00000
	U.S. Steel Wire Gauge	Steel	—	—	36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1/0	0.007", 0.0076", 0.0086", 0.0093", 0.0101", 0.0109", 0.0125", 0.014", 0.0156", 0.0172", 0.0187", 0.0218", 0.025", 0.0281", 0.0312", 0.0348", 0.0375", 0.0437", 0.05", 0.0562", 0.0625", 0.0703", 0.0781", 0.0937", 0.1093", 0.126", 0.1406", 0.1562", 0.1718", 0.1875", 0.2031", 0.2187", 0.2343", 0.25", 0.2656", 0.2812", 0.3125"	3 1/4"	00000000	000000

Spark Plug Feeler Gauges

Keep spark plugs working efficiently. These feeler gauges slide between the electrodes to measure the gap. If the gap is incorrect, they have an adjustment tool to bend the electrode where you need it.

Wire Measuring

Wire-measuring gauges measure using different wire thicknesses.

	Dia.	Features		Each
Steel



	0.025", 0.03", 0.034", 0.035", 0.04", 0.045"	1 3/4"	Gap Adjustment Tool	0000000	00000


	0.04", 0.044", 0.045", 0.05", 0.06", 0.08"	1 3/4"	Gap Adjustment Tool	0000000	0000

Wire, Width, and Thickness Feeler Gauge Sets

These sets combine a wire gauge, a tapered-width feeler gauge, and a set of feeler gauges for tight spots in one tool. The tapered-width gauge is designed for measuring hole and slot widths and diameters. The feeler gauge leaves check the thickness of slots, gaps, and alignment; each leaf is marked with thickness. Leaves are riveted together in a fan design that folds up for portability.

		Tapered Ga. Thk.				Closed
	Thk.	Measured Range	Measuring Increments	Electrical Wire Size	Leaf Lg.	Lg.	Wd.		Each
Steel



		0.002", 0.003", 0.004", 0.006", 0.008", 0.01", 0.012", 0.015", 0.0625"	1/64" to 3/16"	1/64"	36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 1/16", 1/8"	4 1/2"	4 15/16"	1/2"	00000000	0000000


		0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, 1 mm, 2 mm	0.5 mm to 5 mm	0.5 mm	36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 1/16", 1/8"	4 15/16"	4 15/16"	1/2"	0000000	000000

Economy Tension Force Gauges for Wire

Measure the tension of wire or cable. First, determine your wire’s diameter with the notches on the side of these gauges. Then, insert the wire between the two nylon rollers on the bottom and the slot on top to get a needle reading. Using the table on the handle, convert the reading into a tension measurement relative to your wire’s diameter.

	Accuracy	Measuring Increments	For Wire Dia.	Ht.	Wd.	Dp.	Display Type		Each
Aluminum Housing



	800 lb.	±24 lb.	5 lb. to 100 lb.	3/32", 1/8", 5/32"	11"	5"	1 1/2"	Analog	0000000	0000000


	2,000 lb.	±60 lb.	60 lb. to 400 lb.	3/16", 7/32", 1/4"	11"	5"	1 1/2"	Analog	0000000	000000
	4,500 lb.	±135 lb.	50 lb. to 400 lb.	1/4", 9/32", 5/16", 3/8"	18 1/4"	7"	1 1/2"	Analog	0000000	000000

Tension Force Gauges for Wire and Filament

Measure the tension of wire and filament without pausing your operation. These gauges are often used to set tension and take continuous readings in 3D printing, spooling, wire cutting, and drawing machines. They can also be used with thin wire rope, carbon fiber, and fiber-optic strands. Slide your material between the three rollers to take measurements, even in tight spaces. All include a calibration certificate traceable to NIST that states these gauges meet standards for accuracy. They include a case for storage and protection.

				For Max. Dia.
	Cap.	Accuracy	Measuring Increments	Wire	Filament	Ht.	Wd.	Dp.	Dial Dia.	Container Type	Display Type		Each
Aluminum Housing



		200 g	±10 g	1 g, 5 g	0.006"	0.008"	8 1/2"	3 5/16"	2 1/4"	1 5/8"	Plastic Carrying Case	Dial	0000000	000000000


		2,000 g	±50 g	50 g	0.02"	0.024"	8 1/2"	4 9/16"	2 1/4"	1 5/8"	Plastic Carrying Case	Dial	0000000	00000000
		10 kg	±0.1 kg	0.25 kg, 0.5 kg	0.039"	0.06"	8 1/2"	4 9/16"	2 1/4"	1 5/8"	Plastic Carrying Case	Dial	0000000	00000000