ID:
2601
Maker's Name:
Cambridge Instrument Co Ltd
Where made:
England
Dimensions:
17 × 16.5 × 8.3 cm
Galvanometer with moving coil and needle pivotted on a single point at its centre of mass, which makes it insensitive to accelerations.
The design was used for decades, in this case configured as a millivoltmeter reading to 120 mV.