Description

it make up of box and needle, appliance of estimating distance, mileage framework, pitching framework and coordinate ruler, can direct direction, measure distance, the angle of pitching, coordinate and draw map. setup of measurement azimuth:is make up of box and needle, azimuth casing, appliance and windows of present. implement of estimating distance:is make up of appliance and window of present and other ***** precision is 5%. framework of measure pitching :is make up of pitching implement of present, swing of present and other thing.bound of measure is ±*0°, unit is 5°.presion is 2.5°. framework of measure mileage:is make up of wheel of mileage, needle of watch and system of gear and other thing.unit:kilometer, preision is 2%. coordinate ruler:is make up of two ruler which is upright with each other. the lengther:*0mm, the shorter:*0 mm, unit:1mm precision:0.5mm product dimension: *0x*0x*7mm inner compass diameter:*0mm outer compass diameter:*8mm neckstrap length:**5mm box dimension:*3x*0x*5mm n.w:**5g g.w:**0g