Induction Coil or Sled Antique Scientific Instrument by Du Bois Reymond 1870

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...

Vertical mirror galvanometer made in 1850 circa, oak and glass, three adjustable screws at the base. Tool constituted by a magnet bar movable inside a coil and connected to a needle. In the absence of current the needle is positioned vertically while when the coil is crossed by the current it creates a magnetic field that moves the needle. This type of galvanometer was used for measurement of insulation of telegraph cables...

Antique ebonite, brass and papier-mâché, spiral-shaped slide rule designed by George Fuller of Belfast, professor of engineering at Queen's University of London in 1878, made by STAN...

Brass sextant signed Imray & Son 89 & 102 Minories London, datable to around mid-19th century, instrument housed in its original mahogany box shaped like the instrument with hinges, ...

The telegraph apparatus made in early 20th century and equipped with electric motor (Københavns Elektromotor Fabrik) perhaps later ca 1925. The brass and steel instrument is state of the art creation by legendary Danish engineers. Very good, minimal age n usage wear, original state, very well preserved and likely functioning. Please study high-res pictures for cosmetic condition! Register serial 70868. app. 14,5 cm high (6”) 27 cm deep (11”) and 22 cm wide (9”). App. 6,2 kg weight it is going to measure some 9 kg packed for shipment. Wheatstone type transmitter was produced by The Great Northern Telegraph Company (Det Store Nordiske Telegrafselskab A / S) that was founded in Denmark in June 1869. It was set up as a merger of three recently established telegraph companies initiated by Danish industrial mogul Carl Frederik Tietgen. The aim of the firm was to create a worldwide telegraph company. The former headquarters of the GNTC on The Bund, Shanghai. The starting point of The Great Northern Telegraph Company (now GN Store Nord) was a concession agreement, which C.F. Tietgen made with the Russian Tzar...

This is an antique rotary wrap reel machine. An English, brass and cast iron factory cotton skein winder by John Nesbitt of Manchester, dating to the late...

Italian Telegraph in solid brass, 1880.

Electrostatic machine by Wimshurst, a British engineer and shipowner, designed in the 1880s, created by Rinaldo Damiani, a builder active in Venice between the end of the nineteenth ...