[spingsprong]

Some of these analogue computers are pretty amazing things.

I can kinda get my head around slow moving ships being tracked by a mechanical computer, but the Russian ZSU-23-4 Shilka self propelled anti-aircraft artillery vehicle used an electro mechanical gun aiming computer in the 60s and 70s.

A mechanical computer that can track a supersonic rapidly manoeuvring jet aircraft by radar, and adjust the aim of its guns quickly enough and accurately enough to score hits. It's amazing what can be achieved.