SEMCO Model 1 (1920s) Previous
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The only model offered by the Sewickley Electric Manufacturing Co. somewhat resembles the Sangamo Type H meter, but borrows heavily from other companies' models. The terminal box is similar to the one used in the Westinghouse B and OA meters, the disk assembly is similar to the GE I-14's, the register pickup assembly is similar to Duncan's M2 meter, and the retarding magnet is similar to the Westinghouse Round and Type A meters.

The features unique to this model include a RED timing mark on the disk's edge, and an odd basic constant (5/24 as used on the Sangamo H instead of 1/3 or 0.6).

Some of the glass covers used with this meter have 'SEMCO' prominently embossed in the cover. The metal covers resemble the ones used on the Duncan M2 meter. There are 3 styles of this model - an earlier version has the nameplate on the terminal cover and one example exists that apparently is a 'detachable' style as it has no terminal chamber but has a nipple with wires protruding.


Semco Model 1
ex-Mike Andvik collection
Semco Model 1
Phil Shelley