Actinometer Antique Measuring Instrument made by Griffin Tatlock London in 30s

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...

Nautical rangefinder signed Made in Great Britan by Kelvin Hughes a divison of Smiths Industries Limited made in the 1960s, complete with original mahogany box. AP 498 Stuats Marine Distance Meter very good working condition. Box size cm 21 x 13 H 6. It is an ancient nautical instrument used to measure...

World War II Bristish inspectors Mark III admiralty pattern clinometer by Watts and Son, London, England. The heavy brass relic is in a fitted hardwood case. The instrument consists ...

This is a vintage rolling rule. An English, brass scientific instrument to aid navigation, dating to the mid-20th century, circa 1950. Attractive period instrument Displays a desirable aged patina Solid brass shows mellow golden hues Used to draw parallel lines on navigation charts Replete with the Ministry of Defense arrow mark and 160100 patent number Oak faced box...