Tachometer displays revolutions per minute (RPM) from 10.000 to 99,999 (resolution 0.001, 0.01, 0.1, 1). In addition, it reports results in feet per minute 3.0000 to 30,000, yards per minute 1.000 to 10,000, and meters per minute 1.000 to 9999.9 (resolution for all three is 0.0001, 0.001, 0.01, 0.1 depending on the revolutions displayed).
For accuracy, see chart. HOLD button freezes reading. LCD digits are 1/2-inch-high and may be read from 10 feet. Impact resistant ABS plastic housing protects the unit.
An individually-numbered Traceable® Certificate provided with each unit, assures accuracy from our ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement.
Supplied with a 9-volt battery (for thousands of readings for over a year). Size is 4-3/4 x 1-3/4 x 1-1/4 inches and weight is 4 ounces. Replacement battery Cat. No. 1112.