Vtg Staedtler Arco Compass 559 11 WP Drafting Tool Design Layout Engineering

This is a vintage Arco compass tool made by Staedtler. 

The item is silver-toned and features two metal arms, a needle on one leg, and a pincher on the leg. 

It measures about 6" tall, 2" wide, and 0.5" deep. 

This compass is in good pre-owned condition and features a protective soft plastic case.