Historical information
Insulates electrical wire/cable which is attached in the groove. Screwed into the cross arm of a power pole. Non conductive so electricity doesn't short out to the ground.
Significance
Used on power poles in the Kiewa Valley
Physical description
Clear blue tinted glass insulator - bell shaped at the closed end. Deep, wide groove towards the wide open end. The wide end is inscribed and opens to a decorated edge of small balls around the circumference. Inside there is a cylinder which is threaded for screwing onto a power pole. This cylinder is shorter than the outside part.
Inscriptions & markings
"Hemingray - 19"
"Made in U.S.A."