Daily Archives: July 17, 2019

A line of petroleum-free, optical polishing pitch that can be selected and mixed, if necessary, for precisely lapping virtually any type of optics is available from Meller Optics, Inc. of Providence, Rhode Island. Meller’s Gulgolz Optical Polishing Pitch is formulated to help to prevent contamination of the polishing media and substrates.  Featuring five grades from […]