DT-105A - DT-107A (Multiple Models)
Hand-Held Contact Tachometer
DT-105A-S12 (LCD MODEL with 12" Circumference Wheel)
DT-107A-S12 (LED MODEL with 12" Circumference Wheel)
DT-107A-12-EXH With Extended Handle

Accurately measure rotational and surface speed, as well as length. Built-in selector switch permits the user to display readings in a wide variety of engineering units. The DT-105/7A-S12 includes a 12" circumference measuring wheel which is offered for safer and easier surface speed measurement by keeping the users hand farther from the moving surface and slowing down the rotational speed.

  • Includes NIST Traceable calibration Certificate
  • Built-in memory for last, maximum, minimum and 10 separate readings
  • Rugged cast aluminum housing
  • LCD Version for use in sunlight and for longest battery life (DT-105A)
  • LED version for use in poorly lit or dark environments (DT-107A)
LCD Display vs LED Display

Optional 12" Wheel for Large Diameter Cables, Tapes & Bands
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Contact & Non-Contact Tachometer
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- Includes 6" circumference surface speed wheel
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Shimpo Laser Tachometer
- Sharp Visible Laser Beam
- Measures RPM & surface speed and length
Complete Kit
All models are supplied as a complete kit including 6" circumference surface speed wheel, two cone tip adapters, funnel tip adapter, shaft extension, two AA batteries, NIST traceable Calibration Certificate and an operating instruction manual - all supplied in a foam-fitted carrying case. kit
Display Range0.10 to 25,000 rpm with floating decimal
Accuracy0.10 to 999.99 rpm: ±0.06 rpm
1,000.0 to 9,999.9 rpm: ±0.6 rpm
10,000 to 25,000 rpm: ±0.006% rpm
DisplayDT-105A: (LCD MODEL) 5 digit 0.47" (12mm) high
DT-107A: (LED MODEL) 5 digit 0.4" (10mm) high
Measurement UnitsPer Second: Inches, Centimeters (optional, inquire)
Per Minute: Revolutions, Inches, Feet, Yards, Meters
Per Hour:
Miles, Kilometers (optional, inquire)
Total: Revolutions, Inches, Feet, Yards, Centimeter, Meters
Memory System13 readings are stored in memory and retained for 5 minutes
(last, max., min., and 10 measurements)
Over-Range IndicatorFlashing numerals
Update Time1 second (typical)
Batteries2 - 1.5 V AA
Battery LifeApprox. 65 hrs. (DT-105A)
Life: Approx. 40 hrs. (DT-107A)
Low Voltage IndicatorFlashing "LO BAT" display (DT-105A)
"B" display (DT-107A)
Operating Temp32 to 113° F (0 to 45° C)
Weight0.9 pounds (400 grams)
Dimensions7.3" L x 2.4" W x 1.8" H
Warranty1 year
Accessories Included2 cone adapters, 1 funnel adapter, 3-1/2" extension shaft, 1 surface speed wheel (6" circumference), carrying case, operating instructions
Country of OriginTaiwan
PDF Data Sheet Click to downloadInstruction Manual Click to download
Sample Calibration Certificate Click to download
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  Item Price Description  
Check the items you would like to purchase then click "Buy Now"
DT-105A$243.00Digital Contact Tachometer with LCD Display and 6in Circumference Wheel
DT-107A$243.00Digital Contact Tachometer with LED Display and 6in Circumference Wheel
DT-105A-S12$292.50Digital Contact Tachometer with LCD Display and 12in Circumference Wheel
DT-107A-S12$292.50Digital Contact Tachometer with LED Display and 12in Circumference Wheel
DT-107A-12-EXH$775.00Digital Contact Tachometer with 12in Circumference wheel and extended Handle and oversized case
DTCA$10.00Spare Tachometer Cone Tip
DTFA$10.00Spare Tachometer Funnel Tip
DTSX$15.00Spare Shaft Extension
DT6$30.006 Inch Circumference Tachometer wheel, 7mm shaft - DT6 / FPM-6
DT12$50.0012 Inch Circumference Tachometer wheel, 7mm shaft - DT12 / FPM-12
LMA-3$150.0012" Knurled Aluminum Measuring Wheel
DT-TRI-HD$35.00Tripod for Tachometers and Stroboscopes
BATT-RC4AA-WC$35.004-pack 2300mAh AA Ni-MH Rechargeable Batteries & Charger Kit
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)