A 19th century 8ins.(20cm) radius brass sextant,
by JD Potter, Poultry, London. Reading from -5 to 160 degrees on the silver scale, the index arm with magnifying lens and screen, fitted with a vernier to 10 seconds. The horizon and four sun shades. In a fitted keystone mahogany carrying case, with sight tube, inverting tube and telescope, two dark lenses and adjusting pin. Bearing a trade plate for JD Potter (successor to RB Bate)31 Poultry, London.
A two draw, brass telescope. With leather covered tube, the 2ins(5cm)diam. objective fitted with dust cover and sliding sun shade, sliding cover to the eyepiece and rack and pinion adjustment to the first draw. 30ins. (76cm)long