Features of the Fisher Scientific Traceable Touch Tachometer:
Simple contact operation with accurate readings.
Touch any rotating surface with the cone convex tip, funnel concave tip or speed wheel for results in two seconds.
Includes: 9V battery
Designed to measure centrifuges, pumps, rollers, shafts, gears, motors, and moving surfaces
Displays rpm from 10.000 to 99,999 with 0.001, 0.01, 0.1, or 1 resolution
Reports results in 3.0000 to 30,000 feet/min., 1.000 to 10,000 yards/min., 1.000 to 9999.9 meters/min. with resolution of 0.0001, 0.001, 0.01, 0.1 (depending on the revolutions displayed)