Ernst leitz wetzlar microscope serial numbers
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- #Ernst leitz wetzlar microscope serial numbers serial numbers#
- #Ernst leitz wetzlar microscope serial numbers serial number#
- #Ernst leitz wetzlar microscope serial numbers license#
The next design was the AM which gave the stage rack and pinion focusing. This model, the CM, added rack and pinion focusing to the Bertrand lens, retaining the large diamter tube. The GM added a slide-focusing Bertrand lens. The KM model had a larger diameter 30 mm tube. Later on, these designs became less promoted, and others were offered. The IIIM was the student pol microscope for many years.ĭuring the early period, the MI and MII were the more sophisticated models. This is one of a long line of Leitz polarizing microscopes. Ernst Leitz II inherited the firm from his father and ran it during the 1930's and 1940's.ĭuring WWII Ernst Leitz II and his daughter were instrumental in arranging for hundreds of Jewish families to escape the holocaust. The condenser on this microscope is known as the model 'aa' Berek condenser, and was the most complex of the models offered. The famous Dr Berek (who refused to work for the Nazis), who was responsible for many important concepts in optics and polarizing microscopy, worked for the Leitz company until his death in 1949. There was even a specialized catalog for polarizing microscopes starting in 1893. Leitz started producing polarizing microscopes after 1885.īy 1890 there was a catalog listing for a petrographic stand. HISTORY OF THE LEITZ POLARIZING MICROSCOPES. Finally the plate at the top of the coarse focusing rack is signed: 'Germany.' The objectives also have signatures. And below those letters, another 'Leitz, Wetzlar' insignia. The top of the limb is signed with the capital initials: 'D. The Main optical tube is signed: 'Ernst Leitz, Wetzlar, N o337916.' The first two words are within the Leitz emblem. The mechanical stage is signed 'Leitz, Wetzlar, Germany.
#Ernst leitz wetzlar microscope serial numbers serial number#
Bureau of Mines, with a serial number that has partly worn off. The sticker, on the lower inside surface of the limb identifies the former owner as the U.S. There are several signatures and a decal sticker. The diameter of the opening of the optical tube is large, to accept unusually large diameter oculars, and is supplied with an adapter, made of black plastic, to accept the supplied standard diameter oculars.
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An engraved area on the right side of the limb above the fine focus has the inscription: '1 Jntervall=0,002 m/m.' This is the exact inscription, likely an error in the engraving, as in German the word interval is spelled 'Intevall.' There is a side fine adjustment which is calibrated. Coarse focusing is by diagonal rack and pinion. Small wrenches are supplied for this purpose (see below). 10 Steps to Pick the Right Doctor.Įach objective can be individually centered in the individual objective adapters accepting the society thread. Visit Healthgrades for information on Dr.
#Ernst leitz wetzlar microscope serial numbers license#
For two months in 2010, and his license was suspended. Metro Atlanta doctors with troubled pasts charged with. Peter Ulbrich and former doctor Nathaniel. His license was suspended, and Ulbrich attended a treatment center in Lawrence, Kansas. Each objective is held in place by a spring-loaded '3-point objective-changing clutch.'
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There is a window slot at the lower end of the nosepiece with a shutter which can be opened or closed via a small knob. It can be slid in or out of the optical path. The analyzer is calibrated over a 90 degree range, in 5 degree increments, and has a rotation brake. There are also two small knobs to adjust the centering of the Bertrand lens in the optical axis. There is a separate iris diaphragm integrated in to the Bertrand assembly. It can be focused by a diagonal rack and pinion. The Bertrand lens sits well above the analyzer. The entire condensor and polarizer assembly is lowered or raised by rack and pinion. The upper iris and flip-up condenser is on a second dovetail slider with its own brake and can also be slid out of the optical axis, independently. It can be locked in the path with another brake.Ībove the polarizer are the optical components of the condenser with a top which can be flipped up or down for higher powers. The polarizer assembly can slide in and out of the optical path on a dovetail. It has a brake for its rotation, and at its bottom end there is an iris diaphragm, the distance of which from the prism can be varied by sliding it up or down. The polarizer rotates through 360 degrees, graduated in 5 degree increments.
#Ernst leitz wetzlar microscope serial numbers serial numbers#
Ernst Leitz Wetzlar Company Microscope Serial Numbers Serial Number Year m2 18 50 18 91 1854.