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Description: | none MANU Unsigned. early 20th century This is a spare bulb for a medical examination instrument possibly an ophthalmoscope, cystoscope, laryngoscope, or sigmoidoscope. Unfortunately there is nolonger an instrument in the Nicoll collection to which this bulb belongs. The light is emitted at right angles to the axis of the instrument. It has a single loop carbon filament which is fused to platinum lead in wires with carbon paste. The positve lead in wire protrudes from the base and produces a contact. The negative is earthed to the nickel shroud of the bulb. The operating voltage is unknown but was probably in the order of 1.5 volts. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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