[BITList] SI units in australia

[John Feltham]

G'day Hugh,

On 07/06/2011, at 3:53 PM, HUGH wrote:

> John,
>  
> The rules we had in school (I left in 1948) all were bisexual - they had Imperial on one side and Metric on the other.  When I started in Kincaids in 1949 I found the engineering side was Metric - funnels (they made funnels as well as engines) and vents and uptakes were Imperial. When I went to night school I had to learn how to deal with Imperial drawing scales, since the Watt College didn't do Metric.  This served me well when I started in Scotts in 1967, after 2 years drawing at 1:50 in Denmark.  Scotts used Imperial scales. Babcock (I was there twice) did drawings in Metric to Metric scales, but once I was required to convert all the dimensions to Imperial for some customer who wanted it presented that way. In Denmark, 65-67, we routinely asked for "et pund" of something in a shop, and came away with a half kilo - and at work a 50mm pipe was "to tommer" (two inches).  The systems will run in parallel for many years.


I suppose that with CAD it would be easy to switch from one unit to another, a couple of keys and the whole drawing would be converted - except that a 1/2 inch pipe does not have an exact equivalent!


ooroo


 

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