Chart Dividers
Also known as a measuring compass, chart dividers are used in cartography (map making), as well as nautical navigation. Manufactured by Bowen & Company, Inc. Serial # 310R and marked with USGS property number "G-154". Object ID: USGS-000400...
Location: Reston, VA, USA

Bevel Protractor
Object has its original Case. A graduated circular protractor with pivoting arm, it is used for measuring or marking off angles. This instrument was manufactured by Bowen & Company and was first used by the U.S. Army Corp of Engineers before being transferred to the U.S. Geological Survey. Object I...
Location: USA

Bow Compass with Case
Bow Compass with Case. Also known as a Drop Bow Pen or Spring Bow, serial #760 C. This instrument was made by Eugene Dietzgen & Company, Chicago and New York and used by the U.S. Geological Survey Topographic Branch after 1945-1960s. Object ID: USGS-000645...
Location: Reston, VA, USA