G.E.C. DIRECTIONAL LANTERNS

"Watford", "Lewisham" and "Tunbridge Wells" Types.
These lanterns, specifically designed to suit the OSIRA lamp, give a special distribution whic hhas been recognised as a new step in street lighting practice, and of great value to motor traffic. The candle-power is reduced where it faces the oncoming driver. The result is remarkably shadow-free lighting and a minimum of glare.

Arrangement Of Units
A mounting height of at least 25 feet is desirable is good results are to be obtained. The special distribution allows a certain flexibility in spacing compared with former lanterns, and although the diversity of illumination (foot-candles) will be greater at the longer spaces, the road brightness observed by a driver will be uch less adversely affected.

Road Appearance And Visibility
When schemes for lighting a section of highway are under consideration it has been found desirable to install a reasonable number of OSIRA lamps if the full benefits of the system are to be appreciated, as the chief feature of highway lighting by OSIRA lamps and G.E.C. lanterns is the remarkable visibility over long distances and the even brightness along a stretch of roadway.

Service
G.E.C. Street Lighting Specialists are at the disposal of all Lighting Authorities and engineers to make suggestions, prepare schemes, and give advice in connection with the installation of OSIRA lamps for Public Lighting.

G.E.C. Engineers are available to advise and assist in every way possible to ensure that every installation of OSIRA lamps gives complete satisfaction both when switched on and throughout life.

A MAIN STREET AT ROMFORD, ESSEX, MADE SAFE FOR TRAFFIC BY OSIRA LAMPS AND G.E.C. LANTERNS. PART OF AN INSTALLATION OF OVER 400 SMALLER UNITS.

THE SAME STREET BEFORE OSIRA ELECTRIC DISCHARGE LAMPS WERE INSTALLED