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- Title
THE COMPARISON CAMERA.
- Authors
Mathews, J. H.; Henke, Lee K.
- Abstract
The article presents information on comparison microscopes, which are used for the examination of bullets and other objects. Those who have had occasion to use a comparison microscope for the examination of bullets and other objects know how very tiring such examinations may become. Not only are they tiring but they are productive of eyestrain. Both of these difficulties disappear with the use of the comparison camera. The images are large and clear and are seen by both eyes and are viewed at a normal and comfortable distance, thus materially reducing eyestrain. A series of knurled control knobs, placed in line a few inches below the ground glass, and one at either side of the ground glass, enable the operator to move the specimens in any desired direction and rotate them. After all adjustments of the two juxtaposed images have been made, one sees on the ground glass exactly what he may expect to see in the finished photograph. A time switch enables to expose for a predetermined length of time. The article also includes details of the specific parts of the comparison microscope.
- Subjects
MICROSCOPES; OPTICAL instruments; COMPOUND microscopes; BULLETS; PHOTOGRAPHS; OPTICAL images
- Publication
Journal of Criminal Law & Criminology (08852731), 1946, Vol 37, Issue 3, p247
- ISSN
0885-2731
- Publication type
Article
- DOI
10.2307/1138507