Lighted MagniCard
Part magnifier, part light and only the size of a credit card, MagniCard is great for looking at fine detail any place you find it. Measures 2-1/8" x 3-3/8" and only 1/8" thick. Operates on 2 lithium CR2016 batteries, included. Buy half a dozen and keep one handy in all the spots you are likely to use and still have one to share with your best friend.