A multi-scale map measurer with metal wheel, used to measure distance in kilometres accurately on maps of all types. Easy to use on all maps.
To use, set the pointer to 0 then trace the route with the wheel. The pointer will show on the dial the distance measured in proportion to the scale of the map.
Scales: 1:15 000, 1:25 000, 1:50 000, 1:100 000, 1:200 000, 1:400 000, 1:500 000, 1:750 000
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Wildlife, science and conservation since 1985