On Sun, 07 Aug 2011 08:10:59 +0100, Chris J Dixon wrote:

harry wrote:

If you look at a guage glass it has diagonal stripes behind it.

Just got my copy of the `825 edition of Wood's "Practical treatise..".
I'll have a work through it and see if what he has to say about
water levels in boilers and how they were judged.

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internet, that wonderful tool for bringing us into contact with things
that make us wish we could scrub our brains out with dental
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