Sample of CER-VIT Glass Telescope Mirror Blank

Object Name: 
Sample of CER-VIT Glass Telescope Mirror Blank

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Object Name: 
Sample of CER-VIT Glass Telescope Mirror Blank
Accession Number: 
2009.4.92
Dimensions: 
Overall Diam: 3.1 cm, D: 0.5 cm
Location: 
Not on Display
Date: 
about 1965-1975
Credit Line: 
Gift of the Daniel R. Stewart family
Primary Description: 
Low expansion glass ceramic. Almost colorless glass with an amber tint; machine-made. Small disk shaped sample etched with an I inside the O and the words CER-VIT at the bottom.
Provenance: 
Summerson, Karen, Source
2009-09-27
Inscription: 
CER-VIT {R within a circle}
mark
Etched On face of disk
O {with the letter} I {inside it}
signature
Etched On face of disk