1.Metal construction 2.Measure azimuth,distance,slope, height,mileage, ... 7 Military compass/Geology compass Detailed Product DescriptionMilitary/Geology compass 1.Metal construction 2.Measure azimuth,distance,slope, height,mileage, ... night operation.Main specificationItemsSpecificationsMeasuring proportion1:25,000 1:50,000 1:75,000 1:100,000 Clinometer reading error≤1.25°Graduation circle0~360°Dial ...