comparison microscope


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comparison microscope

[kəm′par·ə·sən ′mī·krə‚skōp]
(optics)
An arrangement of two microscopes connected by a special receiving ocular so that the field of one microscope is seen at one side of a dividing line and the field of the other microscope at the opposite side.
A projection type of microscope in which the image is compared with a template or known pattern.
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Tenders are invited for Supply of Comparison Microscope With Computer Interface.
Along with key cases, he details such techniques as Alphonse Bertillon's program of physical measurements used to recognize habitual criminals; the study of fingerprints; Phillip Gravelle's comparison microscope for examining bullets; the development of bloodstain identification; and recent advances in DNA typing techniques, blood-spatter analysis, and face-pattern recognition.
Jefferson received a grant that paid for the comparison microscope the class uses.
However, courts don't accept as evidence the results of an automated search without verification by a firearms examiner looking at the actual bullets or cases with a comparison microscope.
The technology for making such comparisons hasn't changed much since the 1920s, when firearms examiners started using so-called comparison microscopes.
Then, by properly focusing the instrument and moving the bullets or shells into their correct positions, the comparison microscope will transmit the fusion of both fatal and test bullets or shells.
After fatal and test bullets or shells have been "matched" under the comparison microscope, enlarged photographs of them may be made for the purpose of illustrating to court and jury the similarities upon which the expert bases his opinion concerning the identity of the weapon used; and often these enlarged photographs assist the examiner in satisfying himself as to the correctness of his conclusions.
Tenders are invited for AMC OF Comparison Microscope Model FSC with digital camera and LAS software Make Leica
Tenders are invited for digital camera with video attachment for leitz comparison microscope
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Provide and deliver five (5) comparison microscopes, as specified, to the KBI Forensic Science Center, Firearms Dept.

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