Vintage Double-Sided STESCO Map Distance Measuring Wheel

Vintage Double-Sided Opisometer Map Distance Measuring Wheel

Vtg. Fedtro Map Measuring Tool + Compass (Opisometer)

Vintage Double-Sided Opisometer Map Distance Measuring Wheel 1940S

Vintage Opisometer Curvimeter Map Measuring Inch To Feet Tool Instrument Germany

Vintage OPISOMETER Curvimeter Map Measuring Inch Tool Instrument West Germany

VINTAGE GERMAN OPISOMETER MAP DISTANCE MEASURING WHEEL

Vintage Germany Map Measurer Opisometer Curvimeter Meilograph Map Tool