Aeroplane Landing Lights: The Principles to be Followed when Installing Lights in Aeroplanes

THIS article is intended to cover only those aspects of the subject which concern those who have to install the lights and those who have to use them. The principles involved, although simple, have been so often overlooked in the installation of the lights that the writer has thought it desirable to deal with certain aspects, such as the angular setting of the beam, in considerable detail.