Vehicle & Technical > Discovery

What is this ?

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Wanderer:
2 replies within 4 minutes. Not bad though Chris.

Ed

Andy.:
Just seen your post Ed, about the machine.

Pre computers must be old  :lol:

Wanderer:
1980s although some were still in use for a while after.

They were bigger than a desktop and old monitor.

Ed

hobbit:
Big magnifying units basically

robbie:
Believe it or not, ALL of the BT Directory Enquiries info used to be on these in the 70's/80's, my wife worked them in their latter days before computers

AND

These were the upgrade from loads of books!!!!!

The viewers were similar to a large self-contained rear projector which passed the image onto the screen for viewing. It always looked odd when you used them cos when you moved the slider to the left, the writing went to the right and vice versa.... never easy to get your head around

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