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An early electronic pocket calculator | by John McLinden
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An early electronic pocket calculator

An "Adler 81" state-of-the-art pocket calculator bought in 1972 and well used for some time.

 

It has its own stitched leather case and it eats batteries! There is no auto-off function, so if you forget to turn it off - there goes another set!

 

The price in 1972? No less than £75 (about $175 in 1972)

 

As you can see, it still works and yes, I did remember to switch it off after I took the photo!

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Taken on July 21, 2017