

Addiator 
Model 


Maker 

Addiator Gesellschaft 
Origin 

Berlin (marked Foreign) 
Date 

1920s to 1980s 
Serial 

156850 


A calculator for the old (pre 1971) pounds, shillings
and pence currency. To add, the stylus is inserted
in the hole to the right of the desired number.
If the number is silver, the stylus is pulled down
to the bottom of the column. If red, it is pushed
up to the top and then pulled round to the left
and down in order to carry to the next column. 

To subtract, the Addiator is flipped over. The
current total is also shown on the other side. The
same operation is carried out but this time the
total is reduced by the amount entered. Adding and
subtracting can be carried out continually provided
the total does not exceed £99,999 19s 11¾d. 

The total can be cleared by pulling up on the
handle at the top (viewed from the adding side.
From the subtracting side, it is at the bottom).
The stylus has a handy pencil at the other end. 

The case can be positioned to act as a desk stand
or the Addiator can be removed from the holder for
easier handling. 



Addiator 
Model 

Rapid 
Maker 

Addiator Gesellschaft 
Origin 


Date 

1920s to 1980s 
Serial 

153480 


This is a decimal version. This one does not open
up and does not stand up on the desk. The stylus
has no pencil. 


