Type I (1903 to 1913)	Back	Up	Next
The Type I was the first "modern" meter as it had all the basic features and adjustments found in today's meters. This model proved to be as popular with the utilities as the Thomson Recording Wattmeter had been just a few years earlier. In fact, this model proved to be dependable enough that many Type I meters were used into the 1960s (and possibly beyond). This is also the last model without a separate chamber for wire connections, the wires entering through holes in the sides of the base (requiring removal of the main cover for access to the terminals). The Type I comes in three different sizes depending on the meter's capacity. The vast majority of this model have metal covers, but a few have turned up recently that have glass covers.

David Dahle collection

Electrical Meterman's Handbook

David Turner collection