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Barkers combined prismatic clinometer/compass, patent no. 1926, circa 1910, 7.5cm diameter, in original leather case; also a First World War Troughton & Simms box sextant, dated 1918, 6.5cm diameter, in a Mason & Sons, Birmingham leather case; and a First World War Abney level/clinometer by Hall Bros., 10cm, in an incomplete leather case stamped 'J A Jacobs & Co., 1915'; and a small brass pocket compass (4)
A Victorian brass mounted boxwood clinometer rule by Negretti & Zambra, LondonOf folding form, inset with a compass and twin spirit levels, the brass hinged section inscribed V.R. Supplied for the Public Service, housed in original stitched leather case. 16.5 cm long. CONDITION REPORTS: Generally in good condition, some minor staining, some wear to case, general wear.
A large Inspectors Clinometer of steel construction having visible spirit level with brass cylinder, the cover stamped Clinometers Inspectors mark 2 OS 1916 GA 1958 GDL 592, in a fitted mahogany case with brass label to the lid Clion. Insp. Cased Mk II G.D. Ltd OS 1509 GA., w.24, d.22, h.11cm.

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