Earlier quoted context omitted.
What are some examples of the obsolete tools? I can imagine a manual hand drill...
Specialty tools that fit vehicles you don't have. Specialty tools for operations that no one would perform by hand anymore. E.g. a cylinder honing tool. Whitworth wrenches, sockets, taps, and dies. My dad had a British motorcycle shop around 1980 and I'm pretty sure there is still some of this in his tool boxes in the garage. Homemade jigs whose purpose you can't even figure out. I think the dominant category would j…
Those are one reason I've never yet had a British or German car, though I do have one with a British-derived engine and a German fuel injection system. (I'll have to remember to pass on all the custom tools when I get rid of the car. The chances are slim to none that I'll ever own another one.)