M.D.S Abney Reflecting Level and Clinometer, 7-inch tube extending to 9-inches, vernier with magnifier and slow motion screw adjustment with leather case. Circa 1940s £150.00
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US Army Swinging Clinometer, sliding button to clamp dial, with leather case. Circa 1943 £40.00
W.F Stanley 3" Dry Prismatic Compass, with bronzed brass case, aluminium circle with stop, circle devided to half degrees, prism with lens front for reading circle while taking a sighting, hinged red & brown filter shades, reversible mirror, leather case £150.00
