I have a pair of ~5x  jeweler's lenses on a band that fits around your  
head, a lot like an optivisor (the lenses can be flipped up out of the  
way), which I find very useful for doing drawings with fine detail  (I  
wear heavy duty prescription glasses and would find it really tough to  
switch between two sets of glasses).  I find that having something I  
can add to my glasses works better than something I have to substitute  
for my glasses.  The big-magnifier-on-a-stand approach is a lot less  
flexible, and as Bruce says it can get in the way.

Another option is to buy a set of inexpensive (though not too cheap!)  
drugstore reading glasses and wear them over your prescription lenses  
-- great for close work; I use them all the time for sewing, etc.

Hope this helps --

Margy N.

Margaret C. Nelson, Ph.D.
Rumford Graphics Scientific Illustration
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124 1/2 Judd Falls Road
Ithaca, NY 14850

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