Troughton & Simms: [Theodolite]
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Cartographer:
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Troughton & Simms
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Title:
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[Theodolite]
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Date:
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c. 1900
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Published:
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London
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Width:
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9 inches / 23 cm
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Height:
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15 inches / 39 cm
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Map ref:
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GLOBE414
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Description:
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Fine early-20th Century universal theodolite by British scientific instrument manufacturers, Troughton & Simms, established in 1826 by Edward Troughton and William Simms.
This theodolite has been constructed in lacquered and oxidised brass the main tube with rack-and pinion focussing to objective, mounted to a circular protractor with double bubble level twin verniers and oil lamp transit illumination, secured to A-frame over swivelling platform signed as per title with further vernier scale and bubble levels to tri-form base with adjustable feet -- 15in. (38cm.) high overall; together with a modern period-style electric transit lamp secured to Perspex display base.
[GLOBE414] |