Pitch Buttoning And Blocking

Duration: 4 min

Year Published: 1944

Creator: U S Office Of Education

Format: 16mm

Color: B&W

Sound: sound

Description: 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.

Metadata Source:3434 U.S. Government Films


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