The Silva Map Measurer is an analogue navigation instrument which makes the measuring of distances on maps very easy.
The map measurer is made up from two dial faces, a handle and a tracking wheel. Displayed on the dials are eight common map scales, four on each side. These scales are 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.
The scales allow the user to easily read the distance in kilometres by tracing the map measurer along the course on a map of known scale.
Directions for use:
To use the device, the pointer is set to zero by turning the small wheel at the base of the measurer. The tracking wheel is placed onto the map and is moved over the map following the line of your course (you may need to press firmly to avoid the wheel from slipping). As the wheel is moved over the map, the pointer rotates to record the distance. When completed, the pointer will indicate the total distance covered for the particular scale of your map.
- Measures scales of 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
- 2 year warranty
- Dimensions: 100 x 45 x 12 mm
- Weight: 20 grams