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Russian Balloon Theodolite by Aerogeopribor, ...
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Small German Brass Theodolite by Hildebrand, ...
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Reading Instrument No. 97 by Max Hildebrand, ...
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2 Surveying Instruments...
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Early Wilton & Co Brass Miner's Dial and Theo...
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Surveying and Drawing Instruments, 19th Centu...
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Small English Theodolite by Casella, c. 1880...
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Theodolite by Breithaupt, c. 1890...
