Meteorology
462 BAROMETER: ANEROID, VIDIE TYPE (755/2) 1885
French manufacture. Signed: F.W. FUNCKLER Haarlem
Baromètre Anéroid 8985-
Diameter 160; depth-55
Air pressure acts on a brass capsule that is partly evacuated, and its
movements are transmitted to a pointer. The invention was patented in
1845 by Lucien Yidie (1805-1866). The patent was challenged by
Bourdons barometer (see 464). Associated with fhis instrument is. i
wooden case covered with black paper, and lined with purple velvet;
180 x 17? x 61. The catch is marked BTÉ SGDG [Breveté sans garantie
du gouvernement]. Purchased in 1885 for Dfl 4|||>0. Frick (1905),
pt 2, 965, fig. 2682; Middleton (1964), 40o|j|ffl BolH(1983), 1 7 « !
