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| Addmaster Junior |
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| Model |
|
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| Maker |
|
Addmaster |
| Origin |
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West Germany |
| Date |
|
1960s |
| Serial |
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|
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| A pocket calculator operated by sliding
bands up and down with a stylus. |
| |
| Adding is performed on one side and
subtraction on the other, flipping between
the two as needed. If the number is
silver, the band is slid down to the
bottom. If red, it is slid up to the
top and round to the left and down to
carry over to the next column to the
left. |
| |
| The stylus has a propelling pencil
on the other end and the holder includes
a notepad. |
| |
| The similarity to the larger Addiator
is no coincidence. The designer of the
Addmaster was the son of the founder
of Addiator. |
| |
| The Addmaster company was also known
as Admult. |
