- This Bausch & Lomb Petrographical Microscope Model LCH is a compound monocular with coarse and fine focus, handle arm, inclination joint, revolvable circular stage, polarizers and analyzers, adjustable mirror bar, and modified horseshoe base. The form is based on the design of Frederick Eugene Wright, a geologist with the Carnegie Institution of Washington. The inscriptions on the objective read “Bausch & Lomb Optical Co. / Rochester, N.Y.” and “SERIES 1 / ⅔ 0.25 N.A. / TUBE LENGTH 160.0 M.M.”
- Ref: Bausch & Lomb, Microscopes and Accessories (Rochester, N.Y., 1919), pp. 66-67.
- F. E. Wright, “A New Petrographic Microscope,” American Journal of Science 29 (1910): 407-414.
- Albert Johannsen, Manual of Petrographic Methods (New York, 1918), pp. 211-212.
- Currently not on view
- Object Name
- date made
- ca 1915
- Bausch & Lomb
- place made
- United States: New York, Rochester
- Physical Description
- metal (overall material)
- glass (overall material)
- brass (overall material)
- overall: 37.2 cm x 10.7 cm x 18.9 cm; 14 5/8 in x 4 3/16 in x 7 7/16 in
- ID Number
- accession number
- catalog number
- Credit Line
- Bausch & Lomb Optical Company
- Science & Scientific Instruments
- Data Source
- National Museum of American History
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