Philadelphia: Henry Troemner, 1913. 8vo., 47 pp., illustrated. Paper wrappers, which are dusty. Light wear; else, very good. Item #29998
The Henry Troemner company made balances, scales, weights, etc. for numerous business applications, including candy, silk, photographers, cream and milk, butter moisture, yarn, hatters' fur, and hair, as well as for the U.S. Mint.