@quixoticgeek Should be in Furlongs per Fortnight, had a friend at college who answered and exam question in those units, just because it said "Use preferred units"
@quixoticgeek I grew up on both Imperial and metric, at college we used Imperial in the engineering shop, and I can visualize 3 thou as that the thickness of a green Rizla. At uni though, it was all SI metric units.
@Porcia 3 thou, that's about 75 microns right? I just remember that a thou is 25 microns, and a tenth is 2.5 microns. I watch too many american engeering gootubers...
@quixoticgeek I have a problem visualizing in Microns if I'm using an imperial Lathe.
@Porcia I am fortunate that the lathes I have access to are all metric. If I have to make something with a ¼-20 thread, I'll use a tap/die. Everything else I'll stick to metric.
@Porcia in college I failed one test in electronics, I challenged the result, and the lecturer asked me to show my process (I had written all my workings out originally too). So I went through, keeping everything as fractions, and then only converting to a decimal number at the end. He had done it with decimals all the way, carrying floating point errors all the way through. I got 100% on appeal.