Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000193
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
July 18, 2024
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MANAGERS AND PROJECTIONISTS 642 when handling small machine screws, since they may be removed and inserted without danger of dropping them. GENERAL INSTRUCTION NO. 20 — THREADING THE PROJECTOR.— All projectors thread precisely alike, so far as the operating principle is concerned. There are differences in the mechanical application of the principle but the principle itself is always the same. The film comes down out of the upper magazine through a fire-trap, Figure 227.