Collection of instruments from ETSA's Standards Laboratory.
Demonstrated by Museum Manager, Max Steen.
(Max is seen here under the supervision of Richard and Sue
Southcott.)
Mercury Arc Rectifier.
415 volts 3 phase to 200 volts d.c. Used from the 1950’s until 1970’s to
supply d.c. in the city for existing old lifts etc.
(An effective device, but didn't take kindly to being dropped - Ed).
Galvanometer with large encircling coil. Accurate
Instrument with levelling screws. Circa 1900’s. Owned by Geoff Taylor
VK5TY.
(Used for measuring current - See
http://en.wikipedia.org/wiki/Galvanometer
for more information.)
Diameter of dial approx 250mm
