This vintage collectible is a working sextant with a 4-inch radius that comes in a wooden box. Made with wood, brass, and glass, this antique reproduction is a perfect addition to any maritime collection. The sextant originated from India and was used by the British Merchant Navy during World War I. The maker of this sextant is Kelvin & Hughes, a renowned company in the field of maritime navigational instruments. It's a great piece for collectors who appreciate the history and craftsmanship of antique reproductions. This item is categorized as a maritime navigational instrument, maritime, and antique.