Uploaded October 2021 | Updated September 2026, 56 minutes ago

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The Triumphator CRN2 mechanical calculator is a rather large pinwheel machine. It was in production in Leipzig, East Germany, from 1959 till about 1965.

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

0:00 Intro
1:09 Addition
1:46 Subtraction
1:58 Clearing
2:52 Multiplication
4:10 Back transfer
5:19 Division
8:02 Outro