A Horstmann counterpoise lamp by Hadrill and Horstmann Ltd of Godalming, England, circa 1950.

With green and cream two tone paintwork.

Balance arms marked:

MADE BY HADRILL & HORSTMANN Ltd GOLALMING ENGLAND

HORSTMANN COUNTERPOISED LAMP BRITISN AND FOREIGN PATENTS PENDING

Rewired and tested, with inline switch.

Sidney Adolph Horstmann (1881 – 1962) was a British engineer and businessman, son of the German clockmaker Gustav Horstmann. In 1913, Horstmann founded the automotive company, Horstmann Cars. He was responsible for developing a tracked coil spring suspension system known as the Horstmann bogie, which is used on tanks, including the Centurion and Chieftain. He patented this system in 1922, some nine years prior to Dr. Ferdinand Porsche’s similar system which was featured in many German tanks in the Second World War. After the Second World War Horstmann formed a new electrical engineering company Hadrill and Horstmann Ltd, with G. C. T. Hadrill, the company are now best known for the Counterpoise lamps they produced.