AT / ATH Tachometers

The AT Series tachometer is a rugged instrument with solid-state circuitry for indication of engine RPM.

It is equipped with a ring nut for mounting into a standard 3-3/8 in. (86 mm) dash mounting hole. A full 240° sweep of the pointer gives an accurate indication on a large easy–to–read scale, and the dial can be illuminated for night reading. The ATH Series model is also equipped with hourmeter to record the elapsed running time of an engine.

  • Improved quality
  • New, easy one-button calibration procedure
  • Every model will accept all signal sources: alternator, magnetic pickup or ignition
  • Easy ring clamp for installation
  • LED backlight
Specifications Downloads How To Order
  • Power Input: 10-32 VDC (100 mA max at 32 VDC, does not include backlight)
  • Backlight: LED, Red (75 mA max at 32 VDC)
  • Accuracy:
    • Tachometer: +2% full scale
    • Hourmeter: +/- 0.02%
  • Temperature Range: -40 to 185° F (-40 to 85° C)
  • Dial (Face Plate): 240° sweep with white numerals
  • Bezel: 304 stainless steel
  • Scale: 0-3000 RPM
  • Case Material: Nylon, 12% glass filled
  • Hourmeter Range: 99999.9 hours in 0.1 increments.
  • Electromagnetic Compatibility: 2004/108/EC
  • IP66 front and IP32 back (vented case)
  • RoHS Compliant

 WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to or visit our California Proposition 65 page.

Additional product documentation can be found on our product support website or by clicking the Help Center button above.

Part Number Model/Description Notes
20700245 AT-30 Tachometer Bright Stainless Steel Bezel
20700246 AT-30-A Tachometer Black Stainless Steel Bezel
20700247 AT-30-B Tachometer SAE Bright Stainless Steel Bezel
20700248 AT-30-C Tachometer SAE Black Stainless Steel Bezel
20700249 ATH-30 Tach/Hourmeter Bright Stainless Steel Bezel with Hourmeter
20700250 ATH-30-A Tach/Hourmeter Black Stainless Steel Bezel with Hourmeter
20700251 ATH-30-B Tach/Hourmeter SAE Bright Stainless Steel Bezel with Hourmeter
20700252 ATH-30-C Tach/Hourmeter SAE Black Stainless Steel Bezel with Hourmeter
20700254 ATH-40-A Tach/Hourmeter 4000 RPM Black Stainless Steel Bezel with Hourmeter

Search form