A black enamelled transit theodolite by John Davis & Son Derby Ltd No.4038 the telescope with rack-and-pinion focusing and bubble level, enclosed vertical circle with fine adjustment, the horizontal circle with fine adjustment, the horizontal circle with silvered scale and magnifier, on three screw tripod mount in mahogany case

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A black enamelled transit theodolite by John Davis & Son Derby Ltd No.4038 the telescope with rack-and-pinion focusing and bubble level, enclosed vertical circle with fine adjustment, the horizontal circle with fine adjustment, the horizontal circle with silvered scale and magnifier, on three screw tripod mount in mahogany case

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