Pocket Telescope, 6 Draw, English, Compact, Negretti and Zambra, circa 1860

This is a large antique 'officer of the watch' telescope. An English, single draw refractor for terrestrial or astronomical use by Negretti and Zambra of London, dating to the late V...

This is an antique 3 draw telescope. An English, brass terrestrial or astronomical refractor by Davis of London, dating to the mid Victorian period, cir...

This is an antique stick barometer. An English, walnut scientific instrument with thermometer by Negretti & Zambra, dating to the late Victoria...

This is an antique 2 draw telescope. An English, chromed brass terrestrial or astronomical refractor, dating to the late Victorian period, circa 1900. Perfect for bird watching, landscape appreciation, wildlife, or maritime observation. Equally suitable for observing the night sky. Supplied with a London Fine oak and brass 'Captain's Stand' for display. Of generous proportion when fully drawn, and neatly stowed in its own case Displaying a desirable aged patina, some light marks commensurate with use Leather covered primary barrel tanned in dark green with some light colour wear Polished draw tubes show bright silvered tones, lightly marked from gentle use Presenting a clear optical performance, with a 34mm (1.25") primary objective lens Lift-off dust cap to the objective, the flared eye cup...

This is an antique four draw telescope. An English, brass refractor for terrestrial or astronomical use by Dollond of London, dating to the late Victori...

This is an antique terrestrial telescope. An English, single drawer refractor with National Service League mark, dating to the Victorian period, circa 1880. Perfect for bird watch...

Unusual oak-cased barograph and barometer by Negretti & Zambra, having five glazed removable lid. The mechanical eight-day movement is housed i...

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...

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-day chart that covers one full rotation of the drum. The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure. The aneroid barometer mechanism has eleven stacked vacuum capsules and utilizes a gate suspension, with an unusual half-round barometer...

19th century Negretti & Zambra aneroid barometer. Large English oak, Gothic style barometer. Free shipping within the United States and Canada.

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

Edwardian polished oak cased barograph with bevelled glass panels. Brass base plate stamped ‘Regent, Jewelled movement supporting the ten vacuum chambers linking the ink pen pointer ...