My preferred approximation from F to C would be dividing by two but still taking the 32 into consideration...
What I can't quite understand about the Imperial system is why they decided to go with 3, 12 and 16. I.E. 12 inches for a foot, 3 feet makes a yard. And 16 oz a pint. On top of that all the fractions are 2-related. 1/2, 1/4, 1/8, 1/16. Why not just 10, 100, 1000!? My biggest embarrassment is to go to a hardware store, stop in front of the wrenches cabinet and start making mental math just to find out what is the next bigger size after finding out the one I have in my hands is a little bit too small! hahahaha Forget going from square inches to square feet in less than 2 seconds! Anyway, in Brazil we sell tires just like in USA. Bronze and Stainless Steel are sized in inches. Mild and special application Steel are in Metric. Same for Plastics. All the first big companies came from Germany or Italy (metric) or England and US (imperial). The country had no regulations at the time and we got stuck with both! =) Tobias On Jul 4, 10:22 pm, Charles MacDonald <[email protected]> wrote: > >> Distance/length: miles/yards/feet for distance but metres/centimetres for > >> building materials (and drawings) > > gee, It is just the reverse in Canada, with Km for Distance, but things > like Plywood still come in 4X8 foot sheets to fit on studs spaced at 18 > inches. > > Small things may come in either, but they make the Kids come to school > with rulers that are ONLY in cm to ensure that they learn that system first. > > > My favourite mixed one is tyres - for example, P225/60R17. That's a 225 > > millimeter wide tyre for a 17 inch wheel, > > with a 60% aspect ratio. That's just nuts. > > That is a work in progress, in the 1960's Tires were sized line 7.50X14 > (7 and a half inches on a 14 inch wheel.) > > -- > Charles MacDonald Stittsville Ontario > [email protected] Just Beyond the > Fringehttp://users.trytel.com/~cmacd/tubes.html > No Microsoft Products were used in sending this e-mail. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
