Produc features and applications
1.  small and portable, stable performance, safe and reliable.
2.  simple function, easy to operate, convenient to carry.
3.  Instead of tape measure, it is operated by one person and can be used for topographic survey, engineering survey, house decoration survey, bridge construction survey, water level monitoring, etc.

Application field:
Used for terrain survey, bridge erection, ballistic analysis, building survey, interior decoration and other occasions that need to measure the distance, length and area.