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

If you'd like to privately share a comment with MMN staff, please use this form.