• • Product features:
  • Four scale scale modes, 1:1 original scale (outer ring),1:50000,1:20000,1:5000, you can choose different scale scales according to the actual length,
  • Just move pulley of the front end of the ontology from the starting point to the end point on the map, and then calculate the actual distance between the two places according to different proportion standards.

Individual operation of production, processing, distribution and wholesale, magnifying glass, bracket, accessories,

Compass, compass, aiming telescope Main Products

QQ:847429714

Telephone: 0579-85188261

WeChat: lxgd18261