1914 Brass Survey Nautical Pocket Compass Signed Magnapole by Negretti & Zambra

Rare magnetic nautical surveying compass, brass, late 19th century signed Elliott Bros London complete with leather case. This is a small compass, 7 cm diameter, typically used in re...

Torricellian barometer of oak wood, signed Negretti & Zambra London from the second half of the 19th century, complete with reading vernier for checking the pressure variation and thermometer. Height 98 cm - 10.6 inches, width 27 cm - 38.5 inches, depth/thickness 5 cm - 1.96 inches. Very good condition, fully functional. For safety during transport the barometer will be shipped emptied of mercury. The mercury will be placed in a sealed container in the package together with the barometer. When it was discovered, that changes of atmospheric pressure are connected to changes of weather, barometers became very popular. Evangelista Torricelli...

Nautical compass on gimbal signed DIRIGO Eugen M. Sherman Seattle USA 1920s, mounted on custom-made walnut and brass board. Eight-twenty rose complete with protractor circle. The com...

Large brass liquid compass signed OBSERVATOR Rotterdam from the 1930s. Eight-twenty rose complete with goniometric circle. Compass diameter cm 21.5 - 8.5 in, height cm 10.5 - 4.1 in...

Negretti & Zambra Fine Edwardian oak cased barograph with bevelled glass panels and central chart drawer. Ten vacuum chambers linking ...

Negretti & Zambra Fine Edwardian oak cased barograph with hinged lid, bevelled glass panels and central chart drawer. Seven vacuum ...

Negretti & Zambra Fine Edwardian mahogany cased barograph with beveled glass panels and central chart drawer. Seven vacuum chambe...

Unusual mahogany-cased barograph and barometer by Negretti & Zambra, having five glazed removable lid. The mechanical eight-day movement is housed in the drum, fitted with a seven-da...