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Description: | Enlarger for half-plate and quarter-plate glass negatives. Wooden base with tall upright on which enlarger mechanism slides, controlled by a handle operating a rack-and-pinion. A mechanical linkage adjusts the lens distance from the plate to maintain focus as the enlargement factor is changed by moving the body of the enlarger up and down. . The mechanism is counterbalanced by two weights (in the manner used for sash windows). 100 W Edison screw bulb needed. Lens is "Cooke Aviar Anastigmat No. 218067 8.25 inches 210 mm series II f/4.5". Stops down to f/32. | 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: | 1910-1940 | Source: | University of Aberdeen | Creator: | J. Lancaster & Son Ltd. | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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