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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