Repair metal phonograph record mothers.
What does a Mother Repairer do?
Repairs metal phonograph record mother: Examines matrix to locate inspection markings that indicate defects, using microscope or magnifying glass. Removes defects, such as bubbles, dirt, and particles of nickel in sound track grooves, using needles and cloths moistened with solvents. Wipes surface of matrix with cleaning solvent to remove inspection markings.