Burroughs "Series J" Ten Key Adding Machine, 1954-1975

Mechanical adding machines were indispensable office equipment common before the desktop computer era. These devices were perfected in 1886 by the American Arithmometer Company (later known as Burroughs Corporation), inspired by William Seward Burrough's desire to reduce drudgery and errors in clerical work. This simple machine was treated with a streamlining aesthetic. It was available in beige, pink, and blue.