Military tools that last(ed)
I served 21 years in the US Army, retiring in 1983, and my last assignment, at a Signals Brigade HQ, had a computer that was housed in an "18-wheeler", generators not included. My first civilian employer was Wang Laboratories, whose 10 and 20 MB Top Secret rated drives were almost the size of a VW "bug", and felt as heavy pushing them up a ramp into the test chamber.
Fast forward a little and some distance: At "Smiths Aerospace" in Michigan [later GE aviation] I was testing the very first improvement to some electronics fielded with the US Army's M-1 tanks. Nobody made the a good many active components.