Magneto-optic measuring device
Magnetometer apparatus with detector immobilized in wax
Method and apparatus for detecting, classifying and marking defe
Method and apparatus for displaying defects in tubular members o
Method and device for magnetic and ultrasonic testing of ferro-m
Method for determining force characteristic of a device for magn
Method for measuring and correcting the induced magnetization in
Method for nondestructive measurement of heat affected zone of i
Method of distinguishing material characteristics in a well bore