The polarizer rotates through 360 degrees, graduated in 5 degree increments. 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 assembly can slide in and out of the optical path on a dovetail. It can be locked in the path with another brake. Above the polarizer are the optical components of the condenser with a top which can be flipped up or down for higher powers. 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. The entire condensor and polarizer assembly is lowered or raised by rack and pinion.

Leitz - Although the company origins trace back to 1849, the real history of Leica cameras began when Oscar Barnack appeared at the Ernst Leitz. Leitz, Wetzlar. Large preparation (dissecting) microscope with erecting prism. Leitz Wetzlar, No. Mittleres mikroskop - Stativ III, c. 1886; Ernst Leitz, Wetzlar; serial # 196553. Leitz Large Travelling Microscope 'DT', c. Leitz Wetzlar, No. Middle Model Microscope IIIa, c. Leitz, Wetzlar, No. Entomological Field Microscope, c. Leitz, Wetzlar, No. Microscope Stand 1, c. Leitz, Wetzlar, No. Lot: Ernst Leitz Wetzlar 3 lens microscope, serial number:, Lot Number: 9796A, Starting Bid: $100, Auctioneer: William Bunch Auctions & Appraisals, Auction: Fall. The Antique Microscope Finding True Value in Vintage Microscopes. Ernst Leitz of Germany. Many microscopes were sold in wooden boxes with serial numbers on.

The Bertrand lens sits well above the analyzer. It can be focused by a diagonal rack and pinion. There is a separate iris diaphragm integrated in to the Bertrand assembly. There are also two small knobs to adjust the centering of the Bertrand lens in the optical axis.

The analyzer is calibrated over a 90 degree range, in 5 degree increments, and has a rotation brake. It can be slid in or out of the optical path. 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. Va Ser Que Nadie Es Perfecto Torrent. This slot accepts the wave plates. Each objective is held in place by a spring-loaded '3-point objective-changing clutch.' Each objective can be individually centered in the individual objective adapters accepting the society thread.