Worried

Our New apprentice was baffled when fractions were mentioned, so we bought him a digital caliper with some on, drives him mad 3/256 ths insanity, on working in dimensions try ordering some think 7 1/2" and 2 mm (21.05 cm) long and see how far that goes.

Also for imperial 1/4" or 0.25 or 250/1000 what your preference? or see if there is a drill 0.635 cm I think the latter would never be on stock and not available to order either.

Yep, I find this most useful and you can change the units so easily when abroad. I've never bothered to find out to what accuracy the info displayed is, but my guess is pretty spot on. I do use this info over long journeys, and when in the middle of nowhere in France for instance, I drive using the distance to run info. Long gone are the days as a youth I could tell when my car was running short of fuel. It spluttered to a stop! Not much money in those days!!

Frankly, I think we should be grateful that we've really only 2 major unit systems to worry about.

I can remember reading an artillery manual from the 1790s that had large and extensive conversion tables between weight and dimensional units for different European states (some no longer extant now), further complicated by the fact that units that had 3 or 4 DP conversion factors between different states might still share the same name, or literal translation thereof. For example, IIRC the English Pound differed from both the French Livre and the Prussian Pfund, and both were translated as Pound in the manual...

And there are still Russian rifles from WW1 or thenabouts with their sight ranges calibrated in Arshins.

Edited By Mick B1 on 29/09/2019 10:29:56