Compound "Zentmayer" Style Microscope
Item
Title
Compound "Zentmayer" Style Microscope
Description
The compound microscope is made of lacquered brass and mounted on a japanned black cast iron horseshoe base. The main body tube is mounted on top of a four-inch brass pillar via a compass joint which allows the complete optical assembly to tilt over a range of 90 degrees. There is an inner sliding body tube extender which increases the body length by up to 3 inches. A removable substage condenser has an adjustable diaphragm opening (20 mm max.) The circular specimen stage is engraved "Betz Special, Chicago, Illinois" and has a substage diaphragm located underneath the stage. Many of the Betz microscope components were apparently manufactured by the Gundlach Manhattan Optical Company and some of the Betz microscopes were delivered with Zeiss lenses. The microscope comes with its original hardwood carrying case. It has an interior draw that holds the accessories. The case is secured by a brass swing hook on the side of the case and has a brass carry handle.
The microscope comes with the following accessories: 1 accessory box, 4 glass slides with specimens, 2 objectives which are engraved with 2/3 and 1/6 and both are signed by Betz.
Condition:
Cosmetically: The plano-concave mirror silvering has minor spotting but is perfectly usable. Only slight lacquer blemishes.
Optically: The optics are bright and clear and produce sharp images of the slides.
Mechanically: All mechanical functions operate smoothly including the coarse and fine focus controls and also the gimbaled mirror swivel arm.
Cosmetically: The plano-concave mirror silvering has minor spotting but is perfectly usable. Only slight lacquer blemishes.
Optically: The optics are bright and clear and produce sharp images of the slides.
Mechanically: All mechanical functions operate smoothly including the coarse and fine focus controls and also the gimbaled mirror swivel arm.
Subject
Microscopes
Creator
Betz Chicago
Source
Dean Reynold's Microscope Collection Powerpoint, http://americanhistory.si.edu/collections/search/object/nmah_728058
Publisher
UNC Charlotte
Date
Circa 1900
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: 15" fully extended
Case: 12" x 7"x 4"
Case: 12" x 7"x 4"
Language
N/A
Type
Three-dimensional object
Identifier
070706
Coverage
Chicago, United States