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Description: | a) Solid brass double cone, b) Wooden double folding rule with brass hinge and brass adjusting feet; screw height 49 mm; brass screw supports with slit ends. Identification with Copland's double cone not certain, for Copland had a brass rule . | 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: | 1780-1810 | Source: | University of Aberdeen | Creator: | Professor Patrick Copland (?) | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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