Microscopy Primer
Light and Color
Microscope Basics
Special Techniques
Digital Imaging
Confocal Microscopy
Live-Cell Imaging
Photomicrography
Microscopy Museum
Virtual Microscopy
Fluorescence
Web Resources
License Info
Image Use
Custom Photos
Partners
Site Info
Contact Us
Publications
Home

The Galleries:

Photo Gallery
Silicon Zoo
Pharmaceuticals
Chip Shots
Phytochemicals
DNA Gallery
Microscapes
Vitamins
Amino Acids
Birthstones
Religion Collection
Pesticides
BeerShots
Cocktail Collection
Screen Savers
Win Wallpaper
Mac Wallpaper
Movie Gallery

Bausch & Lomb Comparison Monocular Microscope

In response to the multiple demands of forensic science and inspection microscopy for industrial quality control, Bausch & Lomb manufactured the comparison microscope in 1929. Based on the ingenious design by Albert S. Osborn, the Bausch & Lomb comparison microscope enables the comparison of two specimens juxtaposed in a single field, viewed by a single 10x Ramsden eyepiece.

The Bausch & Lomb comparison microscope is equipped with two 48-millimeter (2x) objectives, but higher power objectives, with magnifications ranging from 2.6x to 100x, are available as optional accessories. By recognizing that forensic applications often demand low-power, wide-field binocular microscopes, the Bausch & Lomb design engineers made their comparison microscope interchangeable with the KW binocular body and its paired eyepieces. Without having to move the specimen and reference materials or adjusting the illumination, the binocular body can be substituted for the comparison monocular body on the same sturdy black metal stand. The stereoscopic instrument provides three-dimensional relief and reveals overwriting, patching, erasures, folds, and crossed lines with startling distinctness that complements details revealed under the comparison microscope.

Forensic science applications include the examination of criminal evidence, such as fingerprints or bullets as well as signatures and other discrepancies associated with fraud and forgeries. Financial, insurance, legal, and law enforcement technical experts in the early twentieth century, comparing substances, surfaces, or colors, often used the comparison microscope. For dealers in antiquities and other collectibles, the Bausch & Lomb microscope would prove very useful for inspecting disputed or suspected documents and verifying historical documents, paper currency, artwork, gems, jewelry, finishes and patinas. The comparison microscope is also well adapted for quality control in industries such as textiles, paper, and paints, and for color matching, especially when the sample and reference materials are relatively small.

BACK TO TWENTIETH CENTURY BAUSCH & LOMB MICROSCOPES

BACK TO TWENTIETH CENTURY MICROSCOPES

Questions or comments? Send us an email.
© 1998-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Friday, Aug 01, 2003 at 11:43 AM
Access Count Since January 8, 2003: 16332
For more information on microscope manufacturers,
use the buttons below to navigate to their websites: