Pitch Buttoning And Blocking - Spherical Lenses

Demonstrates the blocking of large convex lenses, blocking with pagoda tool, the use of the ring button, buttoning and blocking with pitch points and the pitch buttoning and blocking of very small lenses.

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
  2. 16mm Filmography (legacy record) — creator, catalog record