OLIVETTI SUMMA 15 IS NOT WORKING, HOW I FIXED !

Here is a very interesting tutorial on how I repaired my Olivetti Summa 15.
The Summa 15 is a completely mechanical calculator put into production by Olivetti in 1949.
A true work of engineering from the pencil of Natale Capellaro.
The machine occasionally gave correct results but other times the numbers were completely wrong, the machine's internal totalizer had some problems.
It's definitely not an easy job but it's very challenging! Good vision!

[@gabrielenotari3531]

come hai fatto a mettere l’inchiostro?

[@thehandyman1985]

Inaspettatamente funzionava ancora! Comunque ho visto che vendono i rullini su amazon (ero già pronto a comprarne uno)