Addiator Arithma
ADDO Mod 16
ADDO-X 331
Brunsviga 13RK
Brunsviga 13ZK
Calculator "Superautomat SASL"
Facit 1004
Facit EK
Mechanical calculator MADAS
Mellita, Model V/16
Monroe Model L200-X
Nisa PK 5
Original Produx Calculator
Remington Rand Adding Machine
Walther DE 100
Walther RM
XxX calculator

Facit EK
AB Facit, 1936
9-digit interlocking,
8-digit revolution counter,
13-digit result unit Electric variant of the TK.
One-hand operation possible, so that the right hand could always remain free for writing. Wide levers for manual zero position of the counters. Automatic zero position of the puncture after addition and subtraction and electrical deletion of the puncture even with multiplication/division. Semi-automatic division.