. Beck microscopes. Microscopes. No. 33' No. 3328. Double wedge light moderator on stand. This consists of a frame which carries two neutral tint glasses which slide in fittings so connected that they move together in oppo- site directions to vary the density of neutral glass interposed between the source of light and the microscope. The frame carrying the glasses has fittings for the reception of colour filters or diaphragms. The moderator can be adjusted to any height above the table between 2 and 8 in. ... 4 17 6 No. 3315. Bulls' eye condenser, 2| in. diam. lens with complete adjust- me
. Beck microscopes. Microscopes. No. 33' No. 3328. Double wedge light moderator on stand. This consists of a frame which carries two neutral tint glasses which slide in fittings so connected that they move together in oppo- site directions to vary the density of neutral glass interposed between the source of light and the microscope. The frame carrying the glasses has fittings for the reception of colour filters or diaphragms. The moderator can be adjusted to any height above the table between 2 and 8 in. ... 4 17 6 No. 3315. Bulls' eye condenser, 2| in. diam. lens with complete adjust- ments 2 10 0 No. 3315A. Bulls' eye condenser, 2^ in. diam. lens with vertical adjustment only 2 0 0 No. 3317 Bulls' eye condenser, If in. diam. lens, with iris diaphragm and screen holder, on stand as No. 3315 2 15 0 No. 3316. Bulls' eye condenser, U in. diam. lens, with complete adjust- ments ... ... ... ... 15 0 No. 3316A. Bulls' eye condenser, achro- matic and aplanatic, 1-2 in. diam. on adjustable stand, as No. 3316 2 0 0 No 3315 No. 33I5.\. 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 Beck (R. & J. ) Ltd. London : Beck
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Keywords: ., bookcontributorgerstei, bookleafnumber91, booksubjectmicroscopes
