Roger Mills wrote:

I find that the easist way to mark out corner radii like this is to find a
tin of the correct diameter (in this case, 40mm), place it in each corner in
turn so that it is tangential to the sides of the rectangle, and draw round
the appropriate quarter of it.

Or for a posh version:

http://www.axminster.co.uk/product.a...sfile=1&jump=0


--
Cheers,

John.

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