Here is a tip for you that have the sight to use it. The question is what 
good is lipstick while hanging plasterboard. Answer: having a sighted wife, 
that has become very efficient with a sabersaw, Take a  stick of lipstick 
and paint the outer edge of the electrical box with  it. Place your 
plasterboard in place and lay a board near or over where you believe the box 
is, and smack it with a hammer. It will mark out the elevtrical box for you, 
without having to measure. My wife have cut out several boxes this way, over 
the last few days. Not a mistake in the cutting as yet, and the cover plate 
fitss. I got a kick out of her, when I first asked her if she had any old 
lipstick.
RJ
P. S. This work great on paneling too. 

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