The LabStrobe STB100-F is a hand held LED stroboscope used to measure the speed of rotation or frequency of vibration of a fan, motor, speaker, other mechanical part or system. It utilizes the latest in LUXEON LED technology to provide a pocket sized stroboscope with unparalleled brightness and battery life. Made in the U.S.A. with a 2-year Warranty.
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• Size: 4.9" (124mm) x 2.8" (71mm) x 1.3" (33mm)
  
  Brightness: 370 LUX @ 50 cm (19.7"), 6,000 FPM
• 
  Flash rate adjustment (4 buttons) Coarse: Multiply by 2, divide by 2  Fine: Up & Down (1-15 FPM increments)
  Flash phase adjustment (2 buttons) Up & Down, 0-360° adjustment
  Flash rate range in FPM: 60 - 99,990
  Flash rate range in Hz: 1 - 1,666
  Flash rate accuracy:
• at 60 - 17,300 FPM: +/- 1 LSD, at 17,300 - 99,990 FPM: +/- .009%
• 
  Typical Alkaline battery life: 11 hours
  Operating temperature: 14° to 122°F (-10° to 50°C)
  Tripod mountable (1/4 - 20 UNC thread)
  RoHS compliant
  Weight: 6.1 oz (173 grams), batteries included
  Power: 3V (2 AA Batteries included).
  Specifications subject to change without notice.