Retro calculators. Wooden abacus and mathematic calculator from 20 century.

Size: 2800px × 4200px
Photo credit: © Rachko / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abac, abacus, account, calculating, calculation, calculator, computer, count, counter, counting, electronics, hand-held, instrument, machine, mathematics, obsolete, retro, tool, tools, vintage, wooden