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Description: | mark, stamped, 0.25 Amp.
The lamp is known as the Nernst lamp and is rated for 230 volts, 0.25 amp, being used on direct current only. It is similar to B5217 but an earlier pattern and having a straight filament in the centre of the resistance wound in a helical form. The fitting is larger and consists of more pieces assembled by means of bayonet joints and the globe is larger and more obscured.
Part: bulb, Material: glass | Source: | Tyne & Wear Archives & Museums | Identifier: | emu.ecatalogue.science&industry.482382 | Go to resource |
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