Nuts and bolts. SAE, Metric, or both
I been wrenching on vehicles all my life. It use to be only SAE, then it became a mix of SAE and Metric. I thought they we're going to phase out SAE and go all metric at some point, but it seems like ...
Forum Discussion
If it was so easy to design perfect system right from the start we would not have imperial system, bias ply tires, beta vs VHS, 4x8 sheets of plywood, 2x4 lumber, NTSC vs PAL vs SECAM, 120V/60Hz vs 220V/50Hz etc. You can go on and on. Things evolve. It is called progress. The thing is to recognize what is better and adjust accordingly.
