Vintage Dietzgen Drafting tools Engineer Drawing Architect piece missing

Vintage Sterling 3 Sided Drafting Engineering 12" Ruler with box 481M VGUC

Vintage Geometric Compass Set Drafting Tools Made in Germany with Case

6pcs Circle Template for Drafting Geometric Shape Stencils Circle Square

Vintage SHINWA Drafting Compass Rapidograph Pen Attachment Japan - Excellent

Vtg W German Art Calibrate Tool Portrait Drawing Architect Drafting Engineering

PROPORTIONAL DIVIDER DRAFTING TOOL... ENGRAVED, K.C BULLOCK

Vintage Geometric Compass Set Drafting Tools Made in Germany & USA with Case