SPECIFICATION

This lantern has a one-piece die-cast body in corrosion resisting aluminium alloy LM6. A glass type dome refractor is held securely in its correct position by clips with totally enclosed springs. The lampholder bridge piece which can be reversed to give correct focus positions has slotted ends for easy wiring and assembly. Weight 3¾ lbs. It compiles with B.S. 1788/1951.

PERFORMANCE

Refractors can be supplied to give symetrical or asymetrical light distribution.

FIXING

Top entry ¾" B.S.P. with locking screw.

CATALOGUE NUMBER	LAMP	LUMENS PER 100FT. LINEAR		LIGHT OUTPUT RATIO	% IN LOWER HEMISPHERE
		120FT. SPACING	140FT. SPACING
HW.851	100W T.F.	720	615	80%	90%
	150W T.F.	1220	1050		90%
	200W T.F.	1700	1450		90%
	80W MB/U	1360	1160		87%
	125W MB/U	2310	2000		87%

THE 'WELWYN' MKIII

ISOCANDLE DIAGRAM

BASED ON INITIAL OUTPUT FROM 200 WATT T.F. LAMP.

ELECO PHOTOMETIC LABORATORY

ELE(H) 7/59	ELECO LIMITED Sphere Works · St. Albans · Hertfordshire Telephone: ST. ALBANS 54524/8 Telegrams: VOLTARCON ST. ALBANS