LR Research Petrographic Microscope


Title
LR Research Petrographic Microscope
Description
The LR is the top-of-the line petrographic microscope manufactured by Bausch and Lomb. It was one of the first polarizing microscopes to use film polarizers rather than Nicol or Ahrens prisms. The films have badly yellowed in this example. This instrument is equipped with centering lens mounts, double diaphragm condenser and Bertrand lens. The analyzer is also mounted in the tube and can be swung out of the light path. In 1970, the price was $2,089. The serial number is GD7327.
Date
1963
Original Format
microscopes
Extent
Local Identifier
LL02.48.01.29
Creator(s)
Subject(s)
Spatial
Location of Original
Laupus Library History Collections
Rights
This item has been made available for use in research, teaching, and private study. Researchers are responsible for using these materials in accordance with Title 17 of the United States Code and any other applicable statutes. If you are the creator or copyright holder of this item and would like it removed, please contact us at als_digitalcollections@ecu.edu.
http://rightsstatements.org/vocab/InC-EDU/1.0/

Contact Digital Collections

If you know something about this item or would like to request additional information, click here.


Comments

Clyde Spencer Aug 02 2019

The condenser has a swing-in 1/4-wave retarder for providing circularly polarized light.

Comment on This Item

Complete the fields below to post a public comment about the material featured on this page. The email address you submit will not be displayed and would only be used to contact you with additional questions or comments.


*
*
*
Comment Policy