In some real deal applications like connecting rods on engines you can stick your head into. Techs will measure when a bolt has reached a correct torque spec when the bolt has stretched to certain dimension measured with a micrometer.
Torque is also very misleading depending on material. Steel bolts stretch in what feels very linear. Stainless steel bolts, when those are tightened up it's like hitting a wall going from loose to tight.
Click sticks (torque wrenches) also have something to say. Where you hold your hand on the wrench will affect the torque value. Usually there is a line on the handle showing you exactly where your hand should be placed and pulling from.
I work in semi heavy industry. The industrial grade consumer items are great, but usually heavy. The latest example I have is buying bookcases from Uline. Not cheap, not light. But full steel and can hold binders easily. Getting more shelves and another matching one down the road is also easy.
Flea markets are also another great source for well built items. Have had great luck buying industrial grade tooling and electrical test/measurement equipment there.