I worked as a flat rate mechanic 35 plus years . In that scenario very few items were ever torqued. Can you feel the amount of torque? You can get pretty close. You get a pretty good feel for it. Even with power tools. Not everyone has this ability. Same as metal shaping, body work or anything else in life. It was obviously close enough. Stuff didn't break or fall off. Race stuff? I torque any thing I can.