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Leitz Ortholux trinocular microscope

An imposing example of Leitz engineering from circa 1951. The microscope stands 17 " tall to the top of the trinocular eyepiece, and 12" deep without the light attached. It is signed "Ernst Leitz, Wetzler" in two places: on the base and on the head. The base also carries the number: "453271". The microscope was made to operate in both EPI Brightfield and Transmitted Light modes. Switching a lever on the base redirects the light from the base condenser upward and out to the unique nosepiece with a rear optical extension (see photo). The light is controlled here with a variable diaphragm before it passes through the lens and onto the subject. Separate coarse and fine focus knobs are located on the side with a tension adjustable lever. This nosepiece and its five lenses are easily detached and replaced with a separate nosepiece with four lenses for transmitted light. A total of nine Leitz lenses accompany the instrument. Five lenses for EPI illumination include a Leitz 5x NA .09, Leitz Plan FL 10x NA .30, a Leitz 20x /NA .35, a Leitz FL 50x NA .85, and a Leitz FL 100x NA .95 DRY objective. Four transmitted light objectives are included on a separate nosepiece: a Leitz 12x NA .30 APO, a Leitz 25x NA .5 Achromat, a Leitz 40x APO NA .95 with coverslip correction collar for .11 to .23 coverslips, and a Leitz 92x (2mm) APO NA 1.32. Two paired Leitz GW 10x Periplan eyepieces complete the optics. A substage condenser with variable diaphragms is center adjustable with two thumb screws. The mechanical stage is X/Y adjustable.  All controls on the instrument function smoothly.  An original Leitz variable transformer controls the 30w bulb. An example of this instrument can be found in Billings, as item #467.  This microscope is a legendary contemporary classic, reknowned as much for its quality and extended range, as it is for its striking aero dynamic profile.

Item 1094

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