Antique Burroughs Adding Machine Hand Crank Calculator Cast Iron USA c1910s

Antique Burroughs hand crank adding machine, an early mechanical calculator used in American offices in the early 20th century. Constructed of heavy cast iron with original black enamel finish and gold Burroughs branding on the front.  Features raised numbered keys, manual side crank, and classic industrial design. Marked Made in the United States of America by the Burroughs Adding Machine Company of Detroit, Michigan. A striking display piece for industrial décor, office collectibles, or mechanical history enthusiasts.  Crank turns smoothly and keys move freely (see photos). Due to age, item is sold as unrestored and not guaranteed for precision calculation, making it ideal for collectors or display.  🔹 Authentic antique mechanical calculator 🔹 Pre-electric office equipment 🔹 Heavy cast iron construction 🔹 Early 1900s American manufacture  Please review all photos carefully for condition details and patina consistent with age. The machine appears to function properly.  Origin: Detroit, United States  Keywords: antique calculator, mechanical adding machine, vintage office, Burroughs adding machine, collectible calculator, Detroit made, industrial decor, mechanical marvel, office history, retro technology, adding machine, vintage office equipment