Surfaces. (26
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Explains three methods of rough grinding lenses — by hand, by pin-bar, and by mechanical — curvature generator and shows hand grinding in detail. Shows how to use the job card ; how to PetFoleiini
Complete catalog record
Category: Optics-Photography
Subcategory: Miscellaneous
Type: Motion Picture
Catalog number: OE180
Subcategory: Miscellaneous
Type: Motion Picture
Catalog number: OE180
Sources
- Index of Training Films 1946 — title, format, description, catalog record
Record added 2026-07-09 22:50:42