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Date: |
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Description: | 1 1
79
J.WHITE GLASGOW SIR W. THOMSON'S PAPENT NO 2183
trademark
T-shaped brass frame with circular spirit level at bottom of "T" and lens and prism at top. Has moulded wooden grip midway up stem. Prism is adjustable and has two moveable shades. Lens for magnifying figures on card is at top of case. Lead weight fitted under spirit level and two holes for shadow pin (missing) at centre.
A
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | azimuth mirrors Azimuth | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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