In message <4DF97AE39ABDD411872800B0D0797B8B856B4D@ukexchange.avantgo.co
m>, jeremycrdavey@btinternet.com writes
>I've been looking for a suitable straight edge. As I understand it, I need
>one at least about 1.5m long for jobs like the rudder hinges, so the 1m
>aluminium rulers I've found are no good (although no doubt they're good for
>other jobs). All the bar, tube, angle, box, strip, channel, t-section, and
>i-beam steel and aluminium I've found in DIY and trade shops are not true
>when I look along them, so they're no good.
>
Go to a surveyor's supply shop. I bought mine from York Survey Supplies.
It is an extruded aluminium section and cost about 40 GBP I think.
Kenneth Whiteley
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