Uploaded February 2019 | Updated September 2026, 51 minutes ago

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The Brunsviga Nova II is a pinwheel calculator made by Grimme, Natalis & Co from 1925 to 1934.

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

0:00 Introduction, History
1:24 Addition
2:05 Multiplication
2:56 Clearing
3:37 Subtraction
4:12 The counter
6:14 Back transfer
7:13 Outro