- Back
-
Title: Parallel rule [Go to resource]
Description: Parallel rule, 6", formerly the property of A. W. Szlumper, Southern Railway, brass & ebony. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: parallel rule Source: Science Museum Identifier: 1999-7012 Go to resource More Like this...
[Edit] - Back