mirror for solar microscope
Datebefore 1900
Inventory Number1997-1-2058
ClassificationMicroscope Light Source
Subject
Dimensions6 x 24.5 x 16 cm (2 3/8 x 9 5/8 x 6 5/16 in.)
Material
Description6 1/4 square 3/16 thick brass plate. Centerpiece can be rotated through 180 deg. in azimuth by geared knob. Large mirror below centerpiece can be tilted by second geared knob through 180 deg. in elevation. Centerpiece has 2 " internal thread.
FunctionDirect sunlight to projection microscope
Historical AttributesFound together with 1997-1-2057
Jean-Augustin Barral
Date: 1850-1870
Object number: 1998-1-1447
W. & S. Jones
Date: circa 1797
Accessories: original case
Object number: 1999-1-0034
Edward Bromfield
Date: circa 1745
Accessories: storage box (1169b); accessories box (1169c)
Object number: 1169a
Bausch & Lomb Optical Company
Date: circa 1948
Object number: 1997-1-1891
A. Nachet
Date: 1872-1880
Accessories: One objective # 1 with 11.5 x 0.45 mm thread; 2 (different) oculars marked corresponding to the left and right tubes B and A; microscope camera lu[1998-1-0590]; case of accessories (1147b-d)
Object number: 1147a
Bausch & Lomb Optical Company
Date: 1930-1935
Object number: 2001-1-0034