Licence: Public Domain Mark
Credit: Microscopes and accessory apparatus / Ernst Leitz. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![Magnification of the Achromatic and Apochromatic Objectives in combination with the Huyghenian Eye-pieces. Tube-length 170 mm. Distance of image 250 mm. Objectives Eye-pieces Objectives 0 I ii in IV V 1* 15 20 24 28 34 43 Low Power Objectives ] 1 15 20 24 28 34 43 2 25 33 40 47 57 72 3 46 60 70 85 105 130 1 4 58 78 90 110 135 165 High f 5 150 190 235 280 345 420 Power 6 210 275 330 390 480 595 Objectives (Cover-glass thickness 7 270 370 440 525 625 770 Achromatics 8 360 490 570 650 800 990 0.17 mm) ' 9 430 560 670 770 960 1200 Water- j -.~ Immersion ( 395 515 615 720 860 1070 Homo- geneous Oil- Immersion fVio 330 430 510 600 730 870 /12 435 570 680 800 1000 1250 k. 540 710 820 980 1220 1500 Dry Lenses [16 56 67 90 102 116 159 I8 86 110 138 158 186 250 Apochromatics u 220 260 310 350 430 540](https://iiif.wellcomecollection.org/image/b21069785_0017.jp2/full/800%2C/0/default.jpg)
