HT-522 Digital tachometer

Features
Contact/Non-contact Tachometers
Display: 6 digits LCD Display
Data hold
Back light
Low battery indication
Power supply: 4X1.5AAA battery

Specifications
Measurement                          Contact                        1-19999
                                                   Non-contact                 1-99999
Display                                   999999counts               999999 counts
Target distance                        Contact
                                                    Non-contact                 50mm-600mm
Best Accuracy                         0.02% ± 2dgt
Auto power off                           15sec
MAX/MIN/AVE/m/min m/sec ft/min ft/sec in/min
Dimension:                                236x72x35 mm
Weight                                         218g