Type K-3 (1909 to 1915) Previous
Back
Up
Up
Next
Next
 
The K-3 meter was an improvement over the K-1 and K-2 meters with a lighter rotating element and a slightly improved method of winding to reduce losses, but otherwise the K-3 was physically unchanged from the previous models. The low-torque version came out in 1909, the high-torque in 1910. The K-3 shown has the same type of glass cover as used on some K-1 and K-2 meters. Also, the picture shows the dual-magnet arrangement of the high-torque version. K-3, glass cover
Electrical Meterman's Handbook