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Description: | Vertical support for mounting a street lamp fitting so that the height can be adjusted and the lamp rotated, plus a mirror head unit that can be moved on rails (rails missing) and rotated around the lamp, the whole designed to direct light from the lamp into a fixed photometer (not included) so that photometric measurements can be made in all directions around the lamp. (Lacks two bearing sockets for mounting mirror head.) | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | lighting test equipment | Temporal: | 1934-1939 | Source: | Science Museum | Creator: | William Sugg & Co. Ltd. | Identifier: | 2001-68 | Go to resource |
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