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.