Yd. Gauges | McMaster-Carr

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yd.

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	Tachometer Type Tachometer Type

Contact

Noncontact

	Measures Measures

Distance

Speed

	Minimum Measuring (Velocity) Minimum Measuring (Velocity)

0.1 rpm

6 rpm

	Power Source Power Source

Battery

	Housing Material Housing Material

Aluminum

	Maximum Measuring (Velocity) Maximum Measuring (Velocity)

25,000 rpm

99,999 rpm

	Battery Size Battery Size

	Batteries Included Batteries Included

Yes

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Display Type Display Type

	Digital

	Certification Certification

Calibration Certificate
Traceable to NIST

	Container Type Container Type

Case

	Maximum Measuring Distance Maximum Measuring Distance

20 ft.

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23 Products

High-Accuracy Digital Contact Tachometers with Certificate of Calibration

Accurate to within ±0.006% of reading, these tachometers come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. Contact tachometers come in direct contact with the object measured and are an excellent choice for dirty and dusty environments.

Note: Units are calibrated to work with either a 6" or 12" circumference speed wheel but not both.

Choose tachometer with LCD for use in bright light.

Choose tachometers with LED for use in dimly lit areas.

0.1-25,000 rpm Measuring Range (±0.006% Accuracy)
Display Type	Includes	Scale	Batteries Included		Each
LCD	6" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	0000000
LCD	12" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000
LED	6" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000
LED	12" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000

Replacement AA Batteries (Pkg. of 4)	Pkg.	00000
Optional Carrying Case	Each	00000
12" Circumference Grooved Speed Wheel	Each	000000
3 1/2" Extension Shaft	Each	00000
1/2" Dia. Measuring Tip for Shafts with Center Hole	Each	0000
12" Circumference Smooth Speed Wheel	Each	00000
3/4" Dia. Measuring Tip for Flat-End Surfaces	Each	00000
1 1/4" Dia. Measuring Tip for Shafts with Center Hole	Each	00000
3/4" Dia. Measuring Tip for Shafts with Center Hole	Each	00000
1/2" Dia. Measuring Tip for Flat-End Surfaces	Each	0000
6" Circumference Grooved Speed Wheel	Each	00000
6" Circumference Smooth Speed Wheel	Each	00000

High-Accuracy Contact/Noncontact Tachometers

Accurate to within ±0.006% of reading. Switch these tachometers from contact to noncontact mode by attaching the included adapter. They come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. All have a 1/4”-20 female threaded bushing for tripod mounting.

Choose tachometers with LCD for use in bright light.

Choose tachometers with LED for use in dimly lit areas.

Tips measure the rotational speed of shafts and other spinning objects. Tips for flat-end surfaces are often used with pulleys and circular saws. They have a concave surface to fit flush over bumps, such as screw heads. Tips for shafts with center hole are cone-shaped, so they’ll fit the inner diameter of different hole sizes.

Speed wheels measure the length and speed of conveyor belts, bolts of fabric, and material on spools. They have a grooved edge to fit over wire, cable, and cords.

6-99,999 rpm Measuring Range (±0.006% Accuracy)
Display Type	Includes	Max. Measuring Distance, ft.	Scale	Batteries Included		Each
LCD	6" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	0000000
LCD	12" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000
LED	6" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000
LED	12" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000

1/2" Dia. Measuring Tip for Flat-End Surfaces	00000000	Each	00000
Reflective Tape Roll (5 ft. Lg. × 1/2" Wd.)	0000000	Each	00000
1/2" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	0000
1 1/4" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	00000
6" Circumference Smooth Speed Wheel	00000000	Each	00000
12" Circumference Smooth Speed Wheel	00000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000
3/4" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	00000
Optional Carrying Case	00000000	Each	00000
Replacement Contact Mode Adapter	00000000	Each	00000
3/4" Dia. Measuring Tip for Flat-End Surfaces	00000000	Each	00000
3 1/2" Extension Shaft	00000000	Each	00000
6" Circumference Grooved Speed Wheel	00000000	Each	00000