ID: 
2581
Maker's Name: 
Weston Electrical Instrument Corp. Newark N.J.
Where made: 
USA
c. 1935?
Dimensions: 
10 × 10.5 × 4.7 cm

Readout unit of device for measurment of radio-frequency current. Used in conjunction with a 10A thermo-junction shunt. The meter is activated by the current generated by a thermocouple attached to a non-inductive resistor heated by the current of interest, so the deflection will be proportional to the square of the current. 10A maximum reading.