Letter to the Editor: Doolin-Style Magnetic Thickness Gauge

2019
AL#138 p.2               
David Laupmanis                                                                                           

▪ The author built a springless magnetic thickness gauge from Mike Doolin’s article in AL109. It works fine. He presents a photo. It should be noted that Doolin’s model was inspired by the work of Alaine Bieber, writing in AL96.