One of the four
bulbs making up a
working mercury
arc rectifier in
the Melbourne,
Australia tramways
network . Made by
Hackbridge and
Hewetic, England
(more)
One of the four bulbs making up a working mercury arc rectifier in the Melbourne, Australia tramways network . Made by Hackbridge and Hewetic, England, installed in 1936 and providing ~750v DC to passing rolling stock. Cordially disliked by its maintenance staff, loved by anyone lucky enough to see it.
