461893-NIST Extech Tachometer

Special Price $285.10 Regular Price $319.99
The 461893-NIST is a NIST Traaceable PhotoTachometer from Extech.
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  • NIST Traceable
  • Make non-contact rpm measurements of rotating objects
  • Use reflective tape on object to be measured and point the integral light beam
  • Ideal measurement range up to 6" (152mm) distance
  • Readings updated every second
  • Recalls Last/MAX/MIN values


  • Range (rpm): 5 to 99,999
  • Accuracy: ±(0.05%rdg +1d)
  • Sampling Time: 1sec > 60rpm
  • Resolution: 0.1rpm (0.5 to 999.9rpm);1rpm (>1000rpm)
  • Dimensions: 6.7 x 2.8 x 1.5" (170 x 27 x 37mm)
  • Weight: 8.8oz (250g)

With the 461893, you can make non-contact RPM measurements (5 to 99,999 RPM) of rotating objects by pointing the integral light beam (6 in. target distance) at reflective tape placed on the object to be measured. The memory button holds last reading and recalls min/max readings display. Comes with 4 AA batteries, 23 in. (0.6 m) reflective tape, carrying case, and user manual.

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