Mechanical drawing set or drafting set; brass instruments, all operationable. A) Worn black canvas-covered cardboard case w/green velvet lining. B)6 pivot joint compass w/pen point. C)6 plain divider. D)3« spring bow pencil. E) 4« spring bow pen. F)5 spring bow pen. G)3« length bar. H)4« ruling pen, nickle Handle. I)5 ruling pen, ebony handle. J)extra pivet joint pen print. Compass and 1 Spring bow pen stamped: Dietzgen, German. Divider shows Dutch Windmill logo. Case may not be original as items don't fit well. Set is missing pencil lead holder.