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Description: | Hunterian Museum G.1986.134. (typed on a self adhesive label attached to the base, removed). DR. RAMSAY'S Spectroscopic Colour TEST, TROTTER MAKER GLASGOW. MANU John Trotter. circa 1907 15 Drury Street, Glasgow, Scotland DES RAMSAY,Andrew Maitland,Dr. late 19th early 20th century Glasgow, Scotland. This instrument uses a pair of prismatic wedges as in an optical compensator or comparitor. With coarse and fine adjustment a colour, projected through the lower sighting tube , can be compared with a small band of the visible spectrum selected in the upper tube.
It would appear that when the conversion to electric illumination took place the instrument was removed from its original base and the inclinometer at the end of the body tube now serves no function. It would probably have been modified after 1924 when the University was connected to mains electricity and coiled tungstent filament lamps became available. Earlier electric incanescent lamps would not have been sufficiently powerful. | 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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