DT2857 Laser tachometerDetailed product description：

Details

Product Model: DT-2857
Measurement range: 2.5-99999 revolutions per minute
Optoelectronic measurement distance: 50-600mm
Accuracy: ± (0.05% n+1d)
Resolution: 0.1/1
Memory value: maximum/minimum/last value.
Power supply: 4 No. 5 batteries
Dimensions: 145X74X32
Weight (excluding battery): 114g
Applications: Manufacturing industries such as motors, fans, papermaking, plastics, synthetic fibers, washing machines, automobiles, airplanes, ships, etc