One of three demonstration models for sapphire stylus preparation, the final mounted stylus after bevelling. Demonstration Models for Sapphire Stylus Preparation, the Final Mounted Stylus after Bevelling 1948
One of three demonstration models for sapphire stylus preparation, a sapphire blank (an acrylic cylinder). Demonstration models for sapphire stylus preparation, a sapphire blank (an acrylic cylinder) 1948
One of three demonstration models for sapphire stylus preparation, the sapphire mounted in the shank. Demonstration Models for Sapphire Stylus Preparation, the sapphire mounted in the shank 1948