I was brought up on imperial when young have a workshop full of mixed systems. Though I come from a scientific background and was introduced to the SI system at school. One of the issues with Australia converting to the metric system was an apparent assumption that the average person was too stupid or more likely to stuff up decimal points so they build and quote everything in millimeters. A house dimensions are quoted in mm, a rough hole in the ground becomes 300 mm, not roughly a foot Or 3 decimetres or a third of a metre roughly. When they do give deference to fractional measure, The education system also seemed to move away from the notion of fractions per se . So in Europe I will buy a 1/4 of a kilo of something, here it’s 250 gms. This unfortunately leads people to a false assumption of accuracy for jobs at hand.s
I have two calipers. One - Mitutoyo - I’ve had forever, is imperial and very accurate….near as I can tell. Recently bought a digital Neiko that can switch back and forth between imperial and metric. Have not used it much but it seems as accurate….for my needs woodworking/handyman anyway.
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Although the metric system is great for rapid calculation it’s not a measuring system based on human scale. The imperial does allow you to use small numbers to mathematically describe the world in that human context.