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Description: | Dial gauge by John Bull with dial calibrated in 1/10ths thou (0.0001 inches) reading -5, 0, +5 for a complete revolution. A small secondary dial counts the revolutions up to 25, giving a total ,movement of the foot of 0.25 inches (6 mm). Bracket for screw mounting onto a stand is an integral part of rear of casing. In black cardboard box labelled "Mercer dial gauge", not the original box. Dial marked "2N/ 0.0001 inch/ John Bull/ British Indicators Ltd./ Made in England". | 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: | John Bull/ British Indicators Ltd. | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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