Group of Three Compasses

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.

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".

19th Century / 1801 - 1900

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".

"Troughton London"

Brass theodolite with compass, telescopic sight and spirit level, marked 'Troughton London'. Edward Troughton was one of the best manufacturers of scientific, navigational, surveying and astronomical instruments. Following the death of his eldest brother and partner, he took over from William Simms in 1826 and the name of the firm changed to Troughton & Simms.

“F. W. Morgan Optician Manchester”

Brass microscope signed on de base "F.W. Morgan Optical Manchester".

19th Century / 1801 - 1900, 18th Century / 1701 - 1800

Gilded brass monocular with extensible bosy; the end is enamelled and decorated with gilded phitomorphic gyrals.

"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.