signature guide for years, but have only needed it on four or five occasions. I've recommended it here on the NR DW forum previously. 
Those who have used it said that it's the best they've seen as the guide is very dark with the opening is very light (white paper) and provides them with the needed contrast to localize the signature line.
http://www.amazon.com/Signature-Guide-Spring-Metal-Best/dp/B0001BUZMQ/ref=sr_1_fkmr0_1_a_it?ie=UTF8&qid=1502616913&sr=8-1-fkmr0&keywords=spring+steel+signature+guide |
