1870s Brass Sextant Signed Graham & Parkes Liverpool Antique Nautical Instrument

Topographic level signed W.F Stanley of burnished brass, from the second half of the 19th century. In excellent condition and complete with original mahogany box with brass hinges an...

Log o solcometro contamiglia nautico in ottone a forma di harpoon, signed T. Walker's Patent Harpoon Ship Log A 1 London , from the second half of the 1800s. It is an ancient nautical instrument, very rare and with a characteristic shape, which measured the distance and speed of a ship. Veniva gettato fuori bordo e trascinato dietro la nave stessa; ruotando grazie alla sua elica, trasmetteva il numero di giri fatti su se stesso ai tre quadranti realizzati su una placca in metallo smaltato posta al centro del log; i quadranti riportavano le misurazioni in miglia da 0 a 100 in decine, da 0 a 10 in unità, da 0 a 1 in quarti. I dati venivano poi letti ogni ora per ricavare anche la velocità. Good condition replaced flap perfectly working and mounted on custom-made brass wood base. Measurements length cm 54 - 21.2 in, propeller diameter cm 13 - 5.1 in. The last photo is the gift box. In past centuries, the attempt to measure the speed of ships was severely hampered mainly by the 'unavailability of time-measuring instruments of sufficient accuracy: by throwing a piece of wood overboard from the bow of a ship and measuring the time it took to reach the stern, it was possible to obtain some information about the speed of the ship itself, but with many errors and inaccuracies. The principle of the mechanical solcometer was explained to the Royal Society in 1699 by Robert Hooke, but the first model produced for commercial use was not patented until 1802 by Edward Massey...

Brass sextant signed H. Hughes & Son Ltd No. 32890 of the 1930s; instrument complete with optics and housed in its original mahogany wood box of with locking hooks and brass handle,...

Lippich polarimeter, scientifi instrument made in 1893 signed Societé Genevoise Genève, brass and black metal. It is an optical instrument of analysis used to determine the concentra...

An old school nautical instrument used on the bridge of the ship. A wooden body with wood turning knobs at the top. The Captain would chart the course and enter the coordinates in ...

An old school nautical instrument used on the bridge of the ship. A steel body with bakelite and brass turning knobs at the top. The Captain would chart the course and enter the co...

A travel nautical instrument, sextant, to determine the ship’s position. The cover became the base of it. Signed Stanley, London, England circa 1890.

Faceted Beads; Arapaho/Sioux dress on brain-tanned buffalo. Simple four color design; was probably the first dress made after quilling. Stars on dress, and...