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Military Compass Model DQL-7 is for measuring azimuth, distance, slope, height and mileage. The instrument can also be used to measure the simple map. There's some luminous powder on the instrument's suitable parts for using it at night.
Shell Material:Aviation magnesium alloy
Mileage measurement scale:1:25,000 1:50,000 1:75,000 1:100,000
Goniometer reading error:≤1.25°
Time speed set value:5min