Extech RPM33: Combination Contact / Laser Photo Tachometer

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  • Regular price $209.99


Quickly measure RPM, surface speed and length with one tool

The RPM33 provides both contact (2 to 19,999 rpm) and non-contact (2 to 99,999 rpm) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6-foot (500mm) away for added safety. Readings are displayed on the large five-digit backlit LCD. Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average). Comes with contact wheel for linear surface speed (0.2 to 6560 feet/minute; 0 to 1999.9 meters/minute) or RPM measurements, 9-volt battery, reflective tape, carrying case, and user manual.

Product Specs
Specifications Photo mode Contact mode
Range (rpm) 2 to 99,999rpm 2 to 20,000rpm
Surface Speed 0 to 78,720 inches/min
0 to 6560 ft/min
0 to 2186 yards/min
0 to 2000 m/min
Length 3.9 to 39370 inches
0.3 to 3280 feet
0.1 to 1093 yards
0.1 to 1000 meters
Frequency (Hz) 333 Hz
Accuracy 0.05% rdg +1 digit 0.05% rdg +1 digit
Sampling Time 0.5 Sec > 120rpm
Resolution 0.1rpm ( < 10,000 rpm); 1rpm (> 10,000 rpm)
Dimensions / Weight 6.2 x 2.3 x 1.6"(160 x 60 x 42 mm) / 5.3oz (151g)
  • Large 5 digit backlit LCD display
  • Microprocessor based with quartz crystal oscillator to maintain high accuracy
  • Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average)
  • Wide RPM (photo and contact) and Linear Surface Speed/Length (contact) measurements
  • Laser guided for greater distance non-contact measurements up to 1.6ft (500mm)
  • Complete with contact wheel for rpm or linear surface speed/length, 9V battery, reflective tape and soft case

Free Shipping


Our policy lasts 30 days. If 30 days have gone by since you received purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.