High-quality black-and-white photographs of large old machines and tools

[MeJasonT]

I came across a rotary cam controller that was controlling the timing/operation of a food factory packing machine, the machine had a computer but its mechanical/pneumatic functions all came off this cam device. To be honest it was more reliable than the PC, just a shaft with discs on it which contained slots in specific places.


The second picture is from a telephone exchange.