Tag Archives: stylus tips

SAPPHIRE AND RUBY BALLS

Sapphire and Ruby Balls

A full line of sapphire and ruby balls for use as ball check valves, stylus tips, fiberoptic and endoscope lens systems that can now be supplied with a calibration certificate validating diameter and sphericity is being introduced by Meller Optics, Inc. of Providence, Rhode Island. Meller Sapphire and Ruby Balls feature Mohs 9 hardness which […]