Anyone ever run a mechanical tachometer?

I took out an electronic tach and put in a mechanical and ran it for years with no issues, agree on keeping the cable lubed and no sharp bends. IMO there is the one problem, running the cable to the inside. If you have all under dash accessories, heater box, and controls, defroster tubes and radio its hard to run the cable. When I sold the car the tach was one of the things I kept. Lol.