Illustrated price list of microscopes, microscopic apparatus and other optical instruments, manufactured by R. & J. Beck, London.

  • Beck, Richard & Joseph, Philadelphia.
Date:
[1882]
Catalogue details

Licence: Public Domain Mark

Credit: Illustrated price list of microscopes, microscopic apparatus and other optical instruments, manufactured by R. & J. Beck, London. 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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    PRICES OF ACHROMATIC OBJECT-GLASSES AND APPARATUS FOR FIRST-CLASS MICROSCOPE STANDS. ACHROMATIC OBJECT-GLASSES. No. 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 Focal length. 4 inches 3 inches 2 inches 1]4 inches % inch T4D inch T4ff inch % inch £inch 4 inch i^inch fs inch iminer. 5xff inch 3^ inch iminer. inch Linear magnify'g pow'r nearly, with eyepieces Draw-tube closed.. Ditto if drawn out, add for each inch Draw-tube -dosed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out add for each inch Draw-tube closed Ditto if drawn out. add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Dra w-tube closed Ditto if drawn out, add for each inch Draw-tube closed Ditto if drawn out, add for each inch Draw-tube closed.. Ditto if drawn out, add for each inch Draw-tube closed.. Ditto if drawn out, add for each inch No. 1. No. 2. No. 3. No. 4. No. 5. 10 16 26 32 52 n 12 3 20 5 40 6 48 8 74 2 20 4 38 6 70 7 85 10 130 4 30 6 56 8 100 12 120 15 190 5 7o 7 120 12 220 15 270 22 410 8 120 14 210 25 370 27 460 48 710 14 146 24 255 34 460 46 560 70 890 18 200 32 340 48 590 60 720 80 1120 24 225 42 400 63 700 85 860 120 1450 18 225 35 400 60 700 80 860 130 1450 18 400 35 680 60 1180 80 1440 130 2240 50 500 85 870 140 1500 180 1850 280 2800 60 900 100 1570 180 2750 190 3450 370 4950 80 900 150 1570 300 2750 350 3450 900 4950 80 1800 150 3140 300 5500 350 6900 900 9900 160 360 600 700 1800 Angle of aperture; about. 9 12 18 23 32 55 90 75 85 100 120 160 140 170 140 Price. 85. | inch, Homogeneous Oil Immersion, about 1.32, ( Four Systems. Numerical aperture 8 c. 15 00 29 00 29 00 29 00 26 00 42 50 60 00 42 50 42 50 52 50 69 00 50 00 125 00 117 50 170 00 LIEBERKUHNS FOR OBJECT-GLASSES. £75 00 No. Object- glass. Price. No. Obj ect- glass. Price. No. Object- glass. Price. 87. 88. 3-inch, 2-inch, $ c. 5 75 5 75 89. 90. lj-inch, f-inch, $ c. 5 75 4 20 91. 92. To-inch, £-mch, $ c. 4 00 4 00 i