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17 Opera Glasses, 1950 onwards...
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7 German Binoculars, from 1910...
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6 Mother-of-Pearl Opera Glasses, c. 1930...
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2 American Sherman Tank Telescopes, 1943...
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...
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2 English Brass Surveying Instruments...
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English Brass Theodolite by Newton & Co., c. ...
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English Cradle-Type Plain Theodolite by ...
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Brass Theodolite by ...
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10 Surveying Instruments...
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Group of Surveying Instruments...
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Theodolite and Further Surveying Instruments...
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Small German Surveying Level, c. 1880...
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2 Surveying Instruments, c. 1890...
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Circle Level by Wéry, c. 1880...
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2 Surveying Instruments, c. 1900...
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Surveying Instruments...
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2 French Leveling Instruments...
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3 Arm-Protractors...
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Large Waywiser by Harris, London, c. 1780...
