old air pumps

vicdad999999

messing around with the powerheads lately, i started to remenisce. anyone remember those old air pumps about 6-7 inches long piston pumps looked like a choo choo train had 2 rotating wheels had one air outlet had to oil it weekly to bi weekly depending. mine were blue aqua blue. you could run multiple tanks off of? i tried to look it up to see a picture of them but couldnt find anything. i miss them. wonder if anyone knows what im talking about.
edit (sorry) i remember they were heavy they had a steel plate under them.

Romad

No clue but now I want to see a picture of it. Did you find anything yet?

vicdad999999

closest i could find was the old marco air pumps, the ones i used to use had 2 wheels connected by a metal rod.