Mechanical computers are just amazing. The complexity and effectiveness of multiplying cams, shafts, cogs, adding and subtracting gearings, and the like are simply stunning. In a modern age of high capacity storage devices and lightning fast digital processing Its easy to loose track of what we could do, and did, with a mastery of mathematics and mechanical engineering. Watch all 7 videos circa 1953 and really gain an appreciation for these amazing devices.
Mechanical Targeting Computers