I've accumulated a few over the years, and just picked up the poly Sangamo today. L to R, top to bottom... Westinghouse metal OB, glass OB, Fort Wayne K2, Sangamo Type H (H2), General Electric I-14, Sangamo polyphase Type H (H2), Westinghouse Type C, and finally a Westinghouse Type C polyphase switchboard. I'd still like to get a Westinghouse fancy metal script Round Type or Type A, and a GE three-dial I-10.

Lots of meter information at www.watthourmeters.com