A black crackle finish three-circle vernier sextant, signed on the arc H. Hughes & Son Ltd London no 36267, the index arm 15.5 cm radius, swivel magnifier, inset silver scale divided 5o-0o-130o, coloured shades to index and horizon mirrors, sun inverting and star telescopes - 26.5 cm wide, in fitted mahogany box with Thomas Foulkes trade label