All Insulators
Featuring insulators from around the world, Glass, Porcelain, Pintype, Multiparts, Guy Strain, Suspension Discs. Home of Crown Jewels of the Wire Magazine.
porcelain
Glass Insulators Collectors Reference Site
Glass Insulators were first produced in the 1850's for use with telegraph lines. As technology developed insulators were needed for telephone lines, electric power lines, and other applications.In the mid 1960's a few people began collecting these glass a