Wooden pillar insulators, 1900-1950
1900-1950
Copper busbars and ebonite insulators, 1900-1950
1900-1950
Insulators used for Morse's telegraph, 1835
1835
Insulator for pole mounted telegraph wires
Globe Strain Insulator
Galvanised Mild Steel Single Clevis Globe Strain Insulator
Porcelain Insulated Section of Insulator for Grooved Wire
Loop Insulator from Overhead Electrical Equipment from Great Indian Peninsular Railway
Galavanised Mild Steel Single Clevis Giant Strain Insulator
Post Office insulator No. 16
White porcelain insulator for aerial lines
1820-1877
White porcelain insulator for aerial lines
1820-1877
White porcelain insulator for aerial lines
1820-1877
Spanwire Insulator
Globe Type Strain Insulator
Set of three metal-hooded link insulators
Glass Insulator
Shackle Type Porcelain Insulator Open Class
White porcelain single shed insulator with galvanized iron hood
White porcelain insulator for aerial lines
1820-1877
Chain Type Span Wire Insulator
Maseart insulator, one of two. As used by Kew Observatory, Kew, Surrey, England.
Maseart insulator, one of two. As used by Kew Observatory, Kew, Surrey, England.
Glass insulator 15" in diameter in metal mount
1968
two 15" ebonite insulators, 1900-1950
1900-1950
Four white porcelain insulators for aerial lines, 1820-1877
1820-1877
3" Porcelain Loop Insulator
4 3/8" Porcelain Loop Insulator
Third rail insulator, Lancashire & Yorkshire Railway
1916
Insulator, porcelain cut-in insulator
1960