Bausch & Lomb Microscope
Item
Title
Bausch & Lomb Microscope
Description
The monocular compound microscope has a tripod base with the arm and stage in a cradle joint. The stage revolves, and has two indexed swinging arms below the stage. These arms are dovetailed for the substage condenser, which has a wheel of stops and a swing out holder for a dark field disk (which is present,) and for the concave mirror, which can swing below or above the stage. It has a single nosepiece and on the arm, below the focus knobs, are the patent dates for October 1876 and October 1885. "Bausch & Lomb Optical Co" is engraved on the revolving stage. The microscope has a single draw tube which is nickel plated. This microscope is very similar to number 170 in Billings Collection, noting that it has a single nosepiece and a single draw tube. The case is in serviceable condition, but shows the signs of extensive use. There are cracks on the back, the bottom has a crude repair on the front under the door. The lock is complete and seems to be functional, but the locking tab has been removed from the door and a swinging home made latch secures the door closed instead. The key is present in the drawer in the case. The top handle is missing and there is a picture of a dignified man on a Tennessee Walking Horse pasted on the back inside of the case.
The microscope comes with the following accessories: 2 eyepieces: These are not standard diameter, but are larger. They are marked "A", which is a two inch, and "C" which is a one inch objective. Ocular "C" has a sliding ring which can be lifted to insert an ocular micrometer (not present.) There is a "mostly present" card glued inside the case which explains the micrometer, 3 modern objectives in black "plastic" containers, and 1 key.
Condition:
Cosmetic: The concave mirror is in poor condition. The concave has significant bubbles in the silver but the plane side is in good condition. The lacquered brass is in good condition with spotting and wear on the base.
Optically: The lenses are clear and functional.
Mechanically: Both the coarse focus and the draw tube do not hold their position and need to be adjusted.
Cosmetic: The concave mirror is in poor condition. The concave has significant bubbles in the silver but the plane side is in good condition. The lacquered brass is in good condition with spotting and wear on the base.
Optically: The lenses are clear and functional.
Mechanically: Both the coarse focus and the draw tube do not hold their position and need to be adjusted.
Subject
Microscopes
Creator
Bausch & Lomb
Source
Dean Reynolds Microscope Collection Powerpoint. http://www.antique-microscopes.com/patents/US577344%28A%29.pdf
Publisher
UNC Charlotte
Date
c. 1888
Contributor
Laura Burgess
Rights
Texts and images from this collection may not be used for any commercial purpose without prior permission from the Graduate Office, UNC Charlotte.
Relation
N/A
Format
Microscope: 14" closed, 16 3/4" extended.
Language
N/A
Type
Three-dimensional object
Identifier
070430
Coverage
Rochester, New York, United States