Diskussion:Olivetti Summa Prima 20
"Besonderheiten...: It can perform either decimal or Pounds, Shillings and Pence calculations selecting a lever at the base of the machine."
I can't find this lever on my machine (S/N 444952). Are you sure that every Summa Prima 20 has this feature?
J.Appi 17:28, 23. Aug 2008 (IST)