A 7IN. RADIUS VERNIER SEXTANT BY C. PLATH, HAMBURG, CIRCA 1925

the ebonised ladder frame with polished arc signed as per title and complete with maker's trade mark to left and numbered 10377, inset silvered scale divided to 150°, vernier stamped D.R.G.M. 724619 724624 / 25 with quick release clamp, glass glare deflector and swivel magnifier, two mirrors and seven shades, threaded sprung site assembly and wooden handle threaded pin feet, stamped 13 behind main mirror, contained within fitted box of issue with accessories including sighting tubes, mounting assembly, filters and quill-handled brush, with correction certificate inside lid dated 1925 and maker's label, and owner's plate inscribed D. Campbell to front, securing hook and handle -- 12in. (30.5cm.) square