Cutting-edge technology electronic ruler that can measure curved surfaces.
Carry it at any time, long standby USB charging.
- ●●●ON / OFF
The short press turns on for about 1 second; the long-press will shut down in about 5 seconds; without the operating after 180 seconds will automatically shut down. After turning on, the breathing light stays on and can be measured at any time.
- ●●●START MEASURING
Keep its wheel in contact with the measurement object and slide it, the measurement data will be in the real-time show on the screen. During the measurement, the breathing light will flash.
- ●●●SWITCH MEASUREMENT MODE
Simultaneously press the small triangle button for more than one second to open The Q’s measurement mode.
- ●●●AUTOMATICALLY STORED HISTORY
Click any small triangle button to call up 10 sets of historical measurement data. During measurement, short press the middle button will clear and save the current data. If there is no operation for 30 seconds, the system will automatically store the current data, and the data in the main display area will be reset to zero.