There was even a specialized catalog for polarizing microscopes starting in 1893. By 1890 there was a catalog listing forĪ petrographic stand. Leitz started producing polarizing microscopes after 1885. HISTORY OF THE LEITZ POLARIZING MICROSCOPES. The model 'aa' polarizing condensor assembly.A black plastic adapter for the oculars.Ocular, Signed: 'Periplan GF 16X, Ernst Leitz GmbH Wetzlar'.Ocular, Signed: 'Ernst Leitz, Wetzlar, 6X, M.' with three scales, one vertical logarithmic scale calibrated 0-20, and two separate horizontal scales, one on each side of the vertical scale calibrated linearly from 0-30, right to left for the scale on the left side and 0-30, left to right on the right side.An objective signed: 'VICKERS, N2053' and on the other side: 10/0.25.An objective signed: 'COOKE' and on the other side: '20X 0.5' and also: 'C3876 MET.'.A later objective signed: '170/0.17, 40/0.65,' and on the other side ' Leitz, WETZLAR, GERMANY.LEITZ,WETZLAR in insignia) and also 'A.U., N o9' and '5, 30X' A half lacquered-brass objective signed: '(E.Pol objective: 'p3, A=0.25, 10:1' and on the other side (Leitz, Wetzlar in insignia).Pol objective signed: 'p6L, (Leitz, Wetzlar in insignia), Germany,and on the other side: 'A=0.65, 45:1'. Two wave plates, one labelled 'Glimmer ¼ λ and the other 'Gips rot I'.Two wrenches to adjust the nosepiece centering fittings.Eight individual centerable nosepiece fittings.A removable finger-jointed box within the case with holds all the accessories except the oculars.
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