ID: 
1928
Maker's Name: 
Philips
Where made: 
Holland
Dimensions: 
1.7 × 1.7 × 5 cm

This is a small incandescent bulb, rated at 6 Volts 15 Watts, used in optical instruments such as galvanometers. The straight line filament allows its use with a scale for measuring galvanometer deflection.