Projector Lamp (G.B.)
Alternative term: Projection Lamp (U.S.A.)
A lamp in which the luminous element is so mounted that the lamp may be used with an optical system projecting the light in chosen directions.
Note: The terms Lampe de Projection in French and Projection Lamp (U.S.A.) refer more specifically to a lamp intended for use in equipment for the projection of either still or motion pictures on a screen.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM