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An automatic sampling stage microscope for stereology
Author(s) -
Weibel Ewald R.
Publication year - 1970
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1970.tb02199.x
Subject(s) - microscope , sampling (signal processing) , position (finance) , line (geometry) , stage (stratigraphy) , computer science , stereology , optics , materials science , physics , mathematics , detector , geometry , paleontology , finance , economics , medicine , biology
SUMMARY A new instrument is described which permits automatic sampling of microscopic fields on sections. For this purpose a motor‐driven high‐precision specimen stage was fitted to a microscope. The motors are controlled by an electronic unit to permit the following modes of operation: (a) continuous operation by a four‐position joy‐stick switch for easy and rapid scanning of the preparation; (b) single‐step operation, where the specimen is displaced in either the x ‐ or the y ‐direction by a preselected distance adjustable between 15 μm and 20 mm; (c) automatically repeated step operation, where the steps occur at intervals pre‐selectable between 0·5 and 34 sec; (d) scanning operation, where the specimen continuously moves along the x ‐axis and is shifted to the next line at a preselected distance when the end of the sweep is reached. The details of principle and operation are presented together with a few typical examples of application.