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Description: | Black wooden box with red felt lining inside. Inside is a very shiny brass instrument with a wooden handle. It is a hollow ring with a disc which has an axis of rotation orthogonal to the ring. The disc spins via a metal rod and there is very little resistance in its spin. On the end of the ring are 6 square blocks of brass at 3 different lengths. Coming out of the blocks are thin metal strips which extend out the apparatus up to the same length. One however is broken off and is lying in the box. 546810 engraved on the device. | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1880-1940 | Source: | University of Aberdeen | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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