Brass and Mahogany Sextant England 19th Century

"Butterfield a Paris"

Leveller set square with plumb line, in gilded brass, signed “Butterfield a Paris”; there also is the inscription "pouces de Roy". Michael Butterfield (1635-1724) was an English watchmaker who moved to Paris around 1663, where he worked at the royal court and was appointed engineer by Louis XIV. He opened a shop of precision instruments, and specialized, in particular, in the production of sundials. Among his main customers is the Tsar Peter the Great, who also visited the workshop in 1717.

V

Sextant with brass frame, vernier with adjusting screw and microscope for reading, three coloured filters for the fixed mirror, four for the mobile mirror. Marked "P. & G. Mattei Cardiff".

"Baradelle a Paris"

Theodolite in gilded brass, with fixed and movable alidade central compass; signed on the underside "Baradelle a Paris". Baradelle was a French family of makers of scientific instruments; their production includes that of the father Jean-Louis-Jacques (active from 1752 to 1794) and his son Nicholas Eloi (active from 1774 to 1814), both signing indiscriminately with the sole surname. There is the painted and gilded wooden base with phytomorphic motifs as well. A similar theodolite belongs to the English collections of the Science Museum Group.

Hamburg 1837 - 1862

Sextant "D. Filby Hamburg" in ebonized wood, brass and bone, vernier with adjustment screw, three colored filters for the fixed mirror and four for the mobile one, sighting telescope with optics. Contained in a wooden box in mahogany.

18th Century / 1701 - 1800

Brass alidade for a praetorian tablet, consisting of a flat rod, called a ruler, at the ends of which two pinnules with a pin for locking are hinged. Contained in an original leather and suede case on the inside.

Sextant with brass frame, vernier with adjustment screw, three colored filters for the fixed mirror and three for the mobile one, aiming telescope.

Scotland, Early XX Century

Barograph Wilson & Sharp Edinburgh.

"Canivet a Paris"

Level and square set with golden brass wire, signed “Canivet a Paris”. On the instrument there are also the inscriptions “6 p de France / Nelle Mesure”.

"Franciscu"

Gilded brass leveling square signed "Franciscu".

19th Century / 1801 - 1900

Telescope diopter made of brass, composed of a movable graduated ruler, small compass with wind rose on the base, distance collimator telescope, vertical graduated circle and spirit level placed on the top of the telescope.

19th Century / 1801 - 1900

Brass geodesy graphometer, signed "Stanley London", with compass whose bottom is engraved with a compass rose indicating the 4 cardinal points and a broken bubble level. It has an inverted double diopter, as a goal for the fixed reference point, in the lower part. Another movable diopter with reading nonius in the fixed goniometer, the latter having a scale from 0 to 180° and from 180° to 0, indicated from 10° to 10°, semi-circular shape. Contained in a walnut box.

Italy, Mid XX Century ca

Galloni Dental Technician Parallelometer.