Science Museum description (from website): 

'Collection:  SCM - Heat
Object Name:  motor (electric)
Maker:  The Cambridge Scientific Instrument Company Limited
Place Made:  Cambridge, Cambridgeshire, England, United Kingdom
Date Made:  1904
Materials:  copper (metal); brass (copper, zinc alloy); iron; textile; steel (metal)
Measurements:  overall: 130 mm x 200 mm x 155 mm, , 5.415kg


Description:  Tin bolt motor for driving drum (DC?), by The Cambridge Scientific Instrument Company Limited., Cambridge, England, 1904.

Object Number:  1904-47

Credit Line:  Cambridge Scientific Instrument Co. Ltd.'