The problem with the Imperial system... aside from it being rather archaic, is that below the unit of 1 inch... it operates exactly like the metric system... i.e. 10 base. Above however it gets rather bizarre.. it takes 12 of these inch thingys to make the next unit up... which be a foot and three again of these to take yet another step... a yard. Now if it took 10 inches to make a foot... and 100 to make a yard... you might be on to something.... but as it is the Imperial system is a mix mash of at least 3 different base number systems... and that doesnt even get into acres and the lot... which I dont even want to think about :):) Cheers RicB "Yeah, but if you want REALLY tight precision, go for thousandths of a millimeter!" Reminds me of the joiner who went with his engineer friend to the engineers' convention. When it was finished and his friend asked what he thought, he said "Huh, all that talk of tolerances, of give and take so many thousandths! You're LUCKY! We've got to get it RIGHT!" Does no-one know, then, what in imperial meaurements there are 4840 of? Best regards, David.
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