Two examples of Spratt's lightning conductors
1860
Prime conductor from plate electrostatic machine, Galvani collection
1780-1798
Bone-conductor with head-band and separate components
Pear-shaped brass conductor on insulated stand
1900-1983
Cylindrical brass conductor on insulated stand
1900-1983
Spherical brass conductor on insulated stand
1900-1983
Conductor
Cylindrical Conductor
Aluminium conductor
Two pieces of solid conductor
Aluminium alloy stranded conductors
Armoured aluminium conductor
Conductors and isolators
Solid aluminium conductors ("Solidal") for insulated cables
Rectangular wood and tinfoil conductor on glass rod
Brass conductor
Aluminium stranded conductor from outside sub-station
Three solid aluminium conductors ("Solidal") for insulated cables
Four cylindrical conductors with attached rod or wire
B.I. Wire Company's flexible concentric with 0.54 sq.in. conductor
1898