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Description: | One of four. Moving coil meter movement, 1mA full scale deflecting recording pen carried directly on the meter pointer and drawing ink from a long trough. The chart is driven by an A.C. motor with speeds from 6"/minute to 1"/hour. The chart calibrations are non-linear, to take account of the slight variation in effective pen arm length. The case is lacquered teak. Original plug attached. Behind glass there is makers name, location and model. On top there are three sets of two screw type connectors labelled "CLOCK", "+/ -" or "TIMING PEN". A hand-written sticker on the front notes that the timing pen has been removed. | 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: | 1939 | Source: | University of Aberdeen | Creator: | ELLIOTT BROTHERS (LONDON) LTD. | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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