The only model offered by the Sewickley Electric Manufacturing Co. somewhat resembles the Sangamo Type H meter, both in overall design and the stator design. The terminal box is very similar to the one used in Westinghouse's OA meter, and the disk assembly is in many ways similar to GE's I-14 meter. The register pickup assembly is also very similar to Duncan's M2 meter.

The features unique to this model include a RED timing mark on the disk's edge, an odd basic constant (5/24 instead of 1/3 or 0.6), and a retarding magnet which surrounded the register and the ends above and below the disk as on the Westinghouse Round Type and Type A meters.

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.