At 04:37 PM 10/23/2011, IVP wrote: >Back when I used to watch American Chopper, it was frustrating >to see Sr and Jr smoke their brains trying to do maths in 64ths, or >19/16th and a bit minus a touch over 5/8th etc. For goodness sake, >get a ruler with mm ;-) Its hard for us old-timers, though. Canada officially switched to Metric long after I got out of school,=20 so my formative years were spent using inches, feet, miles, ounces,=20 pounds, etc. Of course, I had been dabbling with electronics WAY before I became a=20 teenager, so the move to Metric-type calculations (powers of ten,=20 etc) was already second nature for me - all of the electrical and=20 electronic quantities were already Metric when I came along. Still, though, I start all of my PCB layouts on a 0.10" grid and I do=20 all of my home renovation / woodworking stuff using a tape measure=20 that reads in feet and inches. Even our lumber stores still sell=20 everything in Imperial units - some 20 or 30 years after Canada's=20 official change to Metric. Horses for courses, I guess. Metric units make complete sense to me=20 for all of my electronics stuff. Feet and inches for everything else=20 is just easier for me - I can visualize what something looks like=20 much easier with Imperial units rather than Metric. By the way - some of the furniture / cabinet workers that I have=20 known in the past frequently work with accuracy down to about 1/128=20 inches (a little less than 0.2mm). I'm used to hearing them talk=20 about measurements like "half-inch minus" or "two and a half inches=20 plus", where the 'minus' or 'plus' means about 1/128". Those guys=20 would definitely NOT have had a problem reading the old analog-type=20 meters that I still often use. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .