Whipple eyepiece micrometer w/grid used on 3800
The instrument is of all glass construction. A 50mm x 20mm x 1mm deep Cell is formed by four polished strips cemented to a 75mm x 33mm base. It is primarily designed for use in the microscopy of drinking water. The employment of a cement which is not soluble in methyl alcohol renders it useable for dust examination. As the chamber is not of open moat construction, it cam be hermetically sealed and employed in the study of the growth of microorganisms. The Whipple eyepiece micrometer, 21.0mm dia., is recommended for use with the instrument for most operations. The cover glass, 60 x 25mm, is optically plane on both sides and is 0.5mm thick.
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