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4½-inch micrometer theodolite
- maker:
- W Watson and Sons Limited
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4½-inch micrometer theodolite, no. 920, by Watson & Sons, 313 High Holborn, London, England, 1901-1950, in fitted wooden box.
4½-inch micrometer theodolite, no. 920, by Watson & Sons, 313 High Holborn, London, England, 1901-1950, in fitted wooden box.