拍品專文
George Stebbing worked between 1805 and 1845 from four addresses in Portsmouth and one in Portsea
細節
An early 19th-Century bridge-frame vernier sextant signed Stebbing, Portsmouth
constructed in brass with a lattice frame, the inlaid silvered scale divided 5°- 0°- 135°, vernier with clamp, fine tangent screw adjustment and swivel magnifier, adjustable telescope fitting, two telescopes, seven shades, two mirrors and pin feet, in fitted box with brass handle and securing hooks, the radius -- 8in. (20.3cm.); the box -- 11 x 10in. (28 x 25.5cm.) together with a 1906 softbound copy of the Mariners' Handbook
See illustration (2)
constructed in brass with a lattice frame, the inlaid silvered scale divided 5°- 0°- 135°, vernier with clamp, fine tangent screw adjustment and swivel magnifier, adjustable telescope fitting, two telescopes, seven shades, two mirrors and pin feet, in fitted box with brass handle and securing hooks, the radius -- 8in. (20.3cm.); the box -- 11 x 10in. (28 x 25.5cm.) together with a 1906 softbound copy of the Mariners' Handbook
See illustration (2)
出版
Clifton, G: Directory of British Scientific Instrument Makers 1550-1851, Zwemmer 1995