Cannocchiale in ottone con impugnatura in Galuchat seconda metà XIX secolo

Cannocchiale in ottone con impugnatura rivestita di cuoio e messa fuoco a due allunghi, completo di tappo e di linguetta parapolvere. Manifattura inglese della seconda metà dell'800....

Second half of the 19th century half-hull of an English schooner wooden planking nailed and mounted on ebonized wooden board. Good condition, board measures 100x 13x21 cm - inches...

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 B. Cooke & Son Hull, from the second half of the 19th century and housed in its original mahogany wood box with brass handle, hinges, and locking hooks, complete...

This is a large antique 3-draw telescope. An Irish, terrestrial or astronomical instrument in enamelled brass and leather, dating to the Edwardian period, circa 1910. Perfect for bi...

This is an antique 2-draw telescope, an English terrestrial or maritime navigational instrument, dating to the late Victorian period, circa 1900. Perfect for bird watching, landscap...

It has a cover to protect the lens made of the same gold metal in which the rest of the instrument is made. The lines, pure and clean, are the protagonists, and make it a great opti...

Perfect for bird watching, landscape appreciation, wildlife, or maritime observation. Equally suitable for observing the night sky. This is an antique 3-draw telescope. An English, ...