Nautical Log in Its Wooden Box to Measure Boats Speed Walker Early 1900s

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...

Botanical model made of painted plaster and mounted on black painted wooden boards of an orthotropic ovule made by prof. T. Ferraris for Vallardi publisher Milan Scientific material, complete with plate with the legend of the names of the various parts of the mushroom, early 1900s. Good condition. Measures: 20.5 x 15.7 cm, height 25.5 cm. The origins of the publisher Vallardi date back to 1750 when founder Francesco Cesare (1736-1799) acquired a small craft in the heart of old Milan. In the early nineteenth century, the publishing house was noted for the production of works of art, geography and science, including a "Tour of Italy" which took twenty-two printings between 1819 and 1835. The complete works of various maps and directions for travel, including timetables and fares for transportation of the time, can be considered the first modern tourist guide. The firm "Vallardi" was born in 1843 and the company became industrial, with the opening of branches on national scale...

Nautical compass on gimbal made by Filotecnica Milano of the early 1900s. The compass consists of a copper and glass vessel; at the bottom, a metal stem is attached to which rests t...

Antique and rare magnetic surveying compass, brass with original wooden box, signed E. Vion Paris, early 1900. Very good condition. Height of box cm 32 – inches 12.61. The firm Vion, that still works today, was established in 1830 in Paris and it has always manufactured navigation equipment, in particular compasses and marine instruments...

Unique and finely carved sculpture for the black forest and mountaineer enthousiasts. If you are or if you have a friend who is a mountaineering enthousiast then this hand carved mo...

Automobile Petrol Measure, R Walker & Co., Liverpool Brass Two Gallon Automobile Petrol Measure, R Walker & Co., Liverpool, this is a large and very heavy piece made in brass and l...

Capture the spirit of nautical history with this magnificent 1900s French wooden ship steering wheel. Crafted with exceptional attention to detail, this large, robust wheel showcases the expert craftsmanship of early 20th-century maritime design. The rich, dark wood finish and intricate spokes evoke the charm and elegance of classic sailing vessels...

About Two remaining. The 168" and 144" have sold. Original surveyor's pole and one logging measuring stick. The other wider all wood yellow surveyor pole is fixed. The logging meas...