Uploaded July 2021 | Updated September 2026, 1 hour ago

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The Antares P4 is a pinwheel calculator made by the Italian company Organizzazione Pozzi in the 1950s.

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

0:00 History
0:20 Models
1:55 Addition
2:11 Counter
2:35 Clearing
3:09 Serial number
3:45 Colours
4:15 Further history
4:58 Outro