Maine Memory Network
Maine's Online Museum

Login · My Account · Show Album



Electrical insulator, ca. 1930

Electrical insulator, ca. 1930

Item 74825 zoom send e-card Share this on Facebook Share this on Twitter

Purchase a reproduction of this item on


This insulator is coated with a composite material containing particles of mica, a mineral also used to insulate early toaster elements, fuses, and switches.

Electrical insulators keep electrical current from "leaking" out of wires.

Go back

Please post your comment below to share with others. If you'd like to privately share a comment or correction with MMN staff, please use this form.