Bevel Protractor
![Image: Bevel Protractor](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/000252-Protractor.jpg?itok=uCeTCkPG)
Detailed Description
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 ID: USGS-000252
Sources/Usage
Public Domain.