On Saturday, April 5, 2014 4:45:09 PM UTC-4, woodchucker wrote:
This guy Jack Houweling puts it in perspective.

https://www.youtube.com/watch?v=11FS...em-uploademail



Geez I knew it moved, but when you see how a trapped wood movement can

appear it's remarkable.



Some years ago, I was getting equipment made for my company (American) in the UK. I learned that the UK company used the term "mil" to refer to millimeters and the term "thou" to refer to thousandths of an inch. All went well dimensionally until we started to do flow measurements. The UK company even hooked up an old flow meter that measured gallons per minute. It took us a while to figure out that the poor performance we got was because they were measuring in Imperial Gallons and I was used to using US Gallons. Afetr we realized that, all was well.

Bill


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Jeff