TitleMap mileage reader and compass
Dimensionsoverall: 3/8 in x 1 3/8 in x 3 in
DescriptionHandheld device for measuring distances on maps or drawings. Compass on the back.
From donor Gordon Bell's website: "SELSI, 1 Map mileage reader and compass, Analog Calcula, 2-3 part, Integrator, Mechanical, ca 1930, Germany, 110x35x5 mm, The handle also serves as a pencil. Buy, Reading flea market, (81)."