NEMA - ANSI C78.1407
Electric Lamps — Condenser-Reflector, Four-Pin Prefocus-Base Projection Lamps — Dimensions
|Publication Date:||1 January 2004|
This standard specifies the dimensions essential to the interchangeability of condenser-reflector lamps having four-pin prefocused bases, T12 or T14 bulbs, and used in 8mm motion-picture projectors. It is not the intent of this standard to prescribe operating characteristics or details of design.