Insulators Home > Insulator Styles > Glass > Threaded > CD 250
Joe Maurath Jr says in A History of New England Insulators that "the CD 267.5 and smaller cable style, CD 250, are unique to the [N.E.G.M.] company's manufacture".
Insulators Home > Insulator Styles > Glass > Threaded > CD 250
Contact: A.C. Walker