Map Measurer - Mechanical (Black Rubber Handled)

Map Measurer - Black Rubber Handled is a portable instrument used to measure distance accurately on maps of all types, giving readings for the following common map scales: 1:15.000, 1:25.000, 1:50.000, 1:100.000, 1:200.000, 1:400.000, 1:500.000, and 1:750.000. Directions for use - set the pointer to 0, and then trace the route to be measured with the wheel. The pointer will then indicate on the dial the exact distance measured in proportion to the scale of the map.