Single Draw Ship Captain’s Skyglass by John Lilley & Son, London

Antique telescope from Negretti and Zambra of London. The exceptionally long barrel is three feet closed and fifty two inches open. Black cover. Great optics. Weight: 5 lbs. Overall...

Leather bound British royal navy officers spyglass by Ross London for Gieve Matthews & Seagrove limited. High quality in great condition and exceptional optics. Barrel color is engra...

Maritime display with a ship captains spyglass mounted onto a piece of teak ships grating. The nineteenth century telescope is wrapped in leather. The brasses are highly polished. Gr...

Ships spyglass telescope appropriate for use on a yacht, ship, or anywhere with a view. This has been meticulously polished and lacquered. We just restored a great collection of thes...

English brass and wood barrel nautical ship captain's spyglass with a single draw, polished sunshade, lense cap, and engraved focal tube by maker James Chapman St. Catherines Dock, L...

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...

This is a large antique 'officer of the watch' telescope. An English, single draw refractor for terrestrial or astronomical use in the manner of Dollond of London, dating to the late...

This is a long antique telescope. An English, silvered brass single draw refractor by Dennis of London, dating to the early Victorian period and later, circa 1850. Perfect for bird watching, landscape appreciation, wildlife, or maritime observation. Equally suitable for observing the night sky. Superior length telescope with appealing finish and personal inscription Displaying a desirable aged patina throughout Silvered brass presents bright, reflective tones Bright objective with large 55mm diameter — some marks to lens edge Front element protected by sliding sun shade Removable dust cover encloses the element when not in use Primary barrel dressed distinctively in a later, quality faux crocodile cover...