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Object Glass Micrometer, by Dollond, London, Mid-19th Century

preview image for Object Glass Micrometer, by Dollond, London, Mid-19th Century
Inventory Number: 72083
Object Type:
Persons: Dollond
Date Created: Mid 19th Century
Place Created: London England United Kingdom Europe
Brief Description: A rectangular brown mahogany case with a hinged lid and copper alloy clasp. It contains a copper alloy frame and fitting for mounting to telescope, with 360°scale around its circumference, and glass in two halves of which the top portion is moved sideways by means of a knurl-edged screw. According to the loose paper label in box "Dollond's "Improved object-glass micrometre" 42-inch Telescope (3¾ inch aperture)". Written in ink inside lid of box: "R.O. 1935".
Primary Inscriptions: Unsigned and undated.
Provenance: Written on base of box in ink: "Dollond's "Obj. Glass Micrometer", Radcliffe Observatory".
Collection Group:
Material(s): Mahogany
Copper Alloy
Glass
Paper
Ink
Dimensions:
Height Width Depth Diameter Unit
76 255 152 mm

There are no associated narratives.

Image with multimedia irn 21756Image with multimedia irn 21758

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