Tachometer (DT-2235B) is applicable to the product departments of motor, fan, paper-product, plastics, chemical fiber, washing-machine, automobile airplane, steamer etc.

Display: 5 Digits, LCD
Measuring Range: 5~99,999 RPM
Resolution: 0.1RPM (< 1000RPM) 1 RPM (=1000 RPM) 
Accuracy (23 +/- 5C): +/- (0.05% +1d)
Memory: last, maximum, minimum value
Battery: 4 x 1.5V AA (UM-3) battery