The Caroline is a simple adding machine originally made by Simex. The one shown here is the more common French licenced copy. It was made in the 1960s. It's mechanism is very similar to the Addipresto/Addimat.
Addimat video: https://www.youtube.com/watch?v=hIuxwschXg0
For more information on this and other calculators in my collection, please visit my website:
https://www.jaapsch.net/mechcalc/
0:00 History
1:15 How to use
1:56 Carry mechanism
2:16 Clearing
2:34 History
3:22 Mechanism
6:13 Outro
