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Description: | Torroidal primary coil, possibly with metal core, with thinner wire secondary over part of coil, all mounted on wooden base with 6 brass terminals. On rear writing "Primary = 147 turns/Secondary = 100 turns/Mean diameter of coil 11 cm/thickness = 4.25 cm/depth = 1.56 cm". Connections suggest 2 secondary coils or tapped secondary (detail not investigated). Cotton covered insulation on primary. | 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: | 1950-1965 | Source: | University of Aberdeen | Creator: | Nat. Phil. Workshops | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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