Press ESC Button to Exit..
Box Plug Type
Post Office Box
Plug Type
Fitted with rectangular brass blocks, lacquered.Interchangeable plugs are connected with double nut systems. Three ratio P.O. box has 16 non inductively wound coils and two proportional arms each with coils of 0, 100 and 100 ohms while 4 ratio P.O. box has 16 coils and 2 proportional arms each while coils of 1, 10, 100, 1000 ohms. Two Spring Keys for battery and galvanometer are provided. Fitted in wood box. Accuracy ±0.05 to 0.1%
Manganin coil constantan coil
|
|
A |
B |
|
I |
Three ratio coils |
Three ratio coils |
|
II |
Four ratio coil |
Four ratio coil |
