This awesome item was used by my dad back in the '60s in the St. Louis area. he worked for the defense mapping agency .
he was a cartographer for 35 years making aerial maps and calculations which were top secret

his tool of choice was always German made including this. Vintage 6-in German Drafting Compass by KEUFFEL & ESSER is a historic drafting tool used in engineering and scientific applications. This collectible item from the 1930s to now showcases the precision and craftsmanship of German design. With a sleek and classic design, this compass embodies the tradition and quality of drafting tools from that era. Perfect for collectors or those seeking a unique piece of engineering history, this compass is a testament to the timeless relevance of drafting tools in various fields.