I recently purchased a "Belomo" 7X triplet loupe magnifier. This magnifier allows me to closely observe leds, circuit boards, solder joints, battery contacts, etc. They also sell a 10X variety. This is my first quality magnifier & i am very pleased with it.
www.amateurgeologist.com/products/belomo-7x-triplet-loupe-magnifier.html
www.amateurgeologist.com/products/belomo-7x-triplet-loupe-magnifier.html