. Bacteriological apparatus : pathological, biochemical. Scientific apparatus and instruments; Bacteriology; Chemical industry. ®fj* Will (Eurpuration, UkattfVBtvr, 14090 Achromatic Objectives—Pausch & Lomb. These objectives possess a high degree of excellence both mechanically and optically. The mountings are very accurately centered and the lenses fastened in a durable and perma- nent manner. All are computed from a 160 mm draw tube length and all dry objectives are corrected for a c:>ver glass thickness of mm the mean thickness of No. 2 cover glass. The influence of slight d
. Bacteriological apparatus : pathological, biochemical. Scientific apparatus and instruments; Bacteriology; Chemical industry. ®fj* Will (Eurpuration, UkattfVBtvr, 14090 Achromatic Objectives—Pausch & Lomb. These objectives possess a high degree of excellence both mechanically and optically. The mountings are very accurately centered and the lenses fastened in a durable and perma- nent manner. All are computed from a 160 mm draw tube length and all dry objectives are corrected for a c:>ver glass thickness of mm the mean thickness of No. 2 cover glass. The influence of slight differences in the thickness of cover glasses may, of course be com- pensated for by variation of the tube length. In the a large flat and brilliant field. In the higher powers lower powers particular attention has been paid to securing a large flat and brilliant field. In the higher powers while the field is necessarily more restricted the corrections outside of the optical axis have been carried to a high order. The working distance has been kept as long as possible without sacrificing the perfection of the corrections. The 4 mm objective is supplied in two types of different The .65 (E) having an unusually large working distance is very valuable for work with haemacytometers. The mm of (V) is of new construction in which by the use of fluorite, a considerable reduction of the secondary spectra and with this a greater refinement of definition has been achieved. No. A B C D E F G H I E. F., mm 48 32 16 8 4L 4S 3 N. A. .08 .10 .25 .50 .65 .85 .85 Working Distance .53 .38 '.15 .13 Each 95 Eyepieces- -Huygenian, Bausch & Lomb. Marked according to their. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificapparatusa
