Ainsworth's Precision Balances Combine Speed With Accuracy
[Denver]: [William Ainsworth & Sons], Late 1920s. Bulletin A-1, a sales pamphlet offering scales and balances of William Ainsworth & Sons of Denver. No publication date is listed, but we estimate late 1920s, based on dates listed for the issuance of some product patents. PHYSICAL DETAILS: Pamphlet measuring..... More