Calculating - Addiator
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For an explanation of £sd money
see the Money page
 
 
 
 
   
 
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.
 
 
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