POLISHING

Duration: 28 min

Year Published: 1944

Creator: Office of Education (Department of Health, Education, and Welfare)

Color: B&W

Sound: Optical sound

Description: Shows how to make concave or convex polishing shell, trim polishing shell to size and cut breathers, set up and use polishing machine, make Newton's ring check with test glass, and correct for hollow condition and high condition. From the OPTICAL CRAFTSMANSHIP series. Spherical Surfaces