细节
An oxidised brass lattice frame 'Hezzanith' sextant
signed on the arc Heath & Co. New Feltham, London S.E.9, with silvered scales, the frame with seven shades, mirrors and adjustable telescope mounting, the index-arm, 7½in. (19cm.) radius with vernier, magnifier, tangent screw adjustment and clamp, with accessories in mahogany case -- 11 7/8in. (30.2cm.) wide
signed on the arc Heath & Co. New Feltham, London S.E.9, with silvered scales, the frame with seven shades, mirrors and adjustable telescope mounting, the index-arm, 7½in. (19cm.) radius with vernier, magnifier, tangent screw adjustment and clamp, with accessories in mahogany case -- 11 7/8in. (30.2cm.) wide