Uploaded March 2020 | Updated September 2026, 2 hours ago

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Goldman's Arithstyle Arith-machine, or the Arithstyle, is a small chain adder. The first version was made in 1898, but this is the most common variant that was made from 1911 till about 1920 in New York.

For more information on this and other calculators in my collection, visit my website:
jaapsch.net/mechcalc

0:00 Introduction
0:57 Addition
1:48 Clearing
2:16 History
3:14 Stand
3:38 Use with ledger book
4:12 Memo-pad
4:46 Decimal pointer
5:18 Serial numbers
6:02 Outro