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NPFC - GG-P-661

PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES

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Organization: NPFC
Publication Date: 8 February 1971
Status: inactive
Page Count: 15
scope:

This specification covers overhead projectors which project an image upon a vertical screen in a room lighted with normal intensity.

Overhead projectors shall be of the following types and classes, as specified (see 6.2):

Types: Type I. Standard. Type II. Glare Reducing. Classes: Class A. Auditorium Type Projectors (see table I). Class B. Classroom Type Projectors (see table I). Class C. Collapsible Desk-Top Projectors with Integral Carrying Case (see table I).

intended Use:

Projector, still picture, overhead is intended for use by a teacher, lecturer, or speaker to project transparencies on a screen to be observed by an audience in a normally lighted room.

Document History

August 13, 1982
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
A description is not available for this item.
January 30, 1973
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
A description is not available for this item.
March 16, 1972
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
A description is not available for this item.
GG-P-661
February 8, 1971
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
This specification covers overhead projectors which project an image upon a vertical screen in a room lighted with normal intensity. Overhead projectors shall be of the following types and classes,...
April 14, 1964
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
A description is not available for this item.
June 1, 1960
PROJECTOR, STILL PICTURE, OVERHEAD; ATTACHMENT AND ACCESSORIES
A description is not available for this item.

References

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