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Description: | Resistance box with a selection of alternative resistances from 10000 to 100000 (probably ohms, no label) Wooden box with a hinge lid that covers 2/3 of the box. The lid has a bakelite top and there are 4 black bakelite cones each with a sliding brass rod. They can be pressed down to connect brass blocks beneath. Each rod has a bakelite top with 10000, 20000, 20000 or 50000 printed on. There are 2 screw terminals on the other part of the box not covered by the lid and these are also on top of black bakelite cones. The lid has "GAMBRELL BROS LONDON PATENT" printed on and there is a metal hook for keeping the lid closed. | 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: | 1890-1910 | Source: | University of Aberdeen | Creator: | GAMBRELL BROS | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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