Measurement range: 2.5 ~ 99,999 RPM Resolution: 0.1 RPM (2.5 ~ 999.9 RPM) (over 1,000 RPM) Measurement accuracy: ± (0.05% + 1 digit) Range selection: automatic switchover Memory function: the maximum value, minimum value and the last value of automatic memory Power source: 4 × 1.5 V AAA UM-3 (light-radar type) 4 × 1.5 V AAA UM-3 (dual-mode of light-radar and contact) Size: 190 × 72 × 37 mm
