how to make a small eye type magnifier from a torch

i was in need of a eye type magnifier for inspection of fine materials. Decided to build my own. First need a torch with zoom option. Can easly be found at stores and gasoline stations. This is the one i used to use. Good thing is yolu do not need to destroy it. Just dimounthle the head side and turn the glass upside down. Make sure the flat side goes down. Now reassamle the head itself. And its ready for use. Remaining light unut could still be user as light source for better illumination.