Fresnel Mirror with Original Case

Object Name: 
Fresnel Mirror with Original Case

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Object Name: 
Fresnel Mirror with Original Case
Accession Number: 
2016.8.22
Dimensions: 
(a) Fresnel Mirror H: 16 cm, W: 20 cm, D: 5 cm; (b) Case H: 6 cm, W: 21.7 cm, D: 17.7 cm
Location: 
Not on Display
Date: 
1825-1850
Primary Description: 
Fresnel Mirror with Original Case. Black glass, lacquered brass, wood, black leather, green velvet; assembled. (a) Two front surface mirrors are made of thick black glass held in a precision mount of bright lacquered brass, 20 cm wide. The mirrors are spring-loaded against three thumbscrews for fine adjustment of tilt. There is a hinged mounting bracket to the rear. (b) Original shaped wood case is covered in decorated black leather and lined in green velvet with braiding.
Provenance: 
Tesseract, Source
2016-08-10
Color: 
Inscription: 
W. L.
inscription
Painted (a) on mounting bracket in blue
83
inscription
Painted (b) on top of case in red
1942
inscription
Engraved (a) on one brass mount on front
1942
inscription
Engraved (a) on back
Acquisitions (2017) illustrated, pp. 18-19 (#11); BIB# AI103665
Tesseract: Early Scientific Instruments illustrated, Catalog 100 #50; BIB# 145588