dividers / calipers
Date: circa 1917
Inventory Number: 2004-1-0401
Classification: Dividers/Calipers
Subject:
Maker: American
Cultural Region:
Dimensions:
11 × 2.2 × 36 cm (4 5/16 × 7/8 × 14 3/16 in.)
Material:
Description:
These dividers/calipers were used in conjunction with 3-D maps. There are three sets of graduated scales. Two for the opening width of the dividers: one named S (0-500, divided in multiples of 10) and one named Y (0-900, divided in multiples of 10). The other scale is part of the clinometer. It is made of a moveable cursor on a curved support. The divided scale, to measure angles of inclination, is from 25°-0-25°.
Signedunsigned
Inscribedon clinometer, engraved: PAT. MCH. 20, 1917
below previous one: GRADUATED FOR / B-H RELIEF MAP
below previous one: GRADUATED FOR / B-H RELIEF MAP