The Burroughs Adding Machine can still be purchased today from sites like eBay, usually for between $70 and $300, or more depending on the condition of the machine. At one point the Burroughs Adding ...

This ten-key printing manual adding machine has an black iron and glass frame with a steel keyboard painted green. Two rows of white plastic number keys are marked with digits and their complements ...

This ten-key printing electric adding machine has a gray metal case with ten white plastic number keys arranged in a block. Left of the number keys are CORRECTION, B’K (/) SPACE, and REPEAT keys.