Post Designmaster Compass Set

Vintage 1930’s Frederick Post Designmaster 1145C precision compass set used in hand drafting, among other things. Beautiful stainless tools, made in Germany. There are no open slots in the blue velvet lining of the case, so I believe it to be complete. However, research uncovered more than one version of the 1145. Tools are in the original case which shows wear commensurate with age and use.