"NEW" SM-T100 (Smart Tacho)

The SM-T100 (Smart Tacho) is a hand-held Non-Contact Tachometer for smartphone exclusive use.
It measures rotational speed of up to 60,000.0 rpm.
Measured values can be stored in internal memory in Android device.
Measuring in hard to reach places is possible.
Portable and very handy, no special skills required to use.