US army bought millions of them and created slides of enemy planes to teach the soldiers how to recognise planes. Not a lot of people know that
Works for me, Lol!! I definitely didn’t know that- but I feel that it would still be effective. Flash cards and posters, then Janes book came later
believe it or not, this actually reminds me of something, i forget the name of it, but there was a kind of desk top stationary steam engine, that was kind of a hobby kit that was fairly common in the 1950s and i think was still available in hobby shops right up into the 70s. you could probably still get one on ebay or some such, that had all kinds of accessories you could power with it, little tiny lathes that actually worked, and table saws, that sort of thing.
Yes matey I too remember it too, - called a MAMOD steam engine which, although stationary you could place rubber bands on the driving wheel and 'power' other things with it.
