In recent years following the success of the Gamma Five lantern which received a design award in 1960, there has been a trend towards an integrated design between lantern and column. The Gamma Seven extends this trend by completely merging the individual units into a single identity of the utmost simplicity in the form of a plain cylinderical column and lantern.

The result is a most attractive unit which was highly commended in the Council of Industrial Design's competition for Group B lamp posts held in 1963. The lantern is designed to give a symmetrical distribution and is particularly suitable for access roads, pedestrian areas, precinct and forecourt lighting.

The lampholder assembly is mounted directly onto the support strap in the column. Incoming mains cable is passed through the support strap and retained by a cable clamp. The opal glass cylinder assembly comprising glass and support casting with gasket seating and glazing clips is secured to the column by three socket set screws. The top cap is secured by springs and is easily removed for lamp replacement.

The column is made from 4½" O.D. tube with a cable entry at the base for incoming supply. Three grub screws at the top of the column clamp the lantern in position, and the column is suitably primed for painting after erection. The columns are supplied with door covering the base compartment which contains a baseboard giving space for fixing 80 watt lamp control gear and supply termination.

To extend the versatility of the lantern a wall bracket has been developed for use in areas where columns are not suitable and a bollard for areas where low level lighting is required. The lantern is clamped to both of these in the same manner as on the columns.