FLUKE FLUKE-931 ESP Combination Photo/Contact Tachometers (FLUKE-931)

Fluke 931 optics (non-contact) measurement speed:1 to 99,999 rev / min
Contact measurement speed:1 to 19,999 rev / min
Fluke 931 Precision:± 0.02% of reading + 1 digit
Optical sensing distance:500 mm
Storage Temperature:-20°C to 70°C
Weight:250 g (with batteries)
Dimensions:175mm x 60mm x 28mm