Magnification
Reading edition
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 III IV V
{ 1* { 1 Low power { 1a Objectives { 2 { 3 { 4 12 18 22 26 30 40 Achromatics
12 18 22 26 30 40
6-9 9-15 11-19 13-21 18-29 24-35
25 33 40 50 60 80
45 60 70 80 105 130
75 100 115 135 180 230
High Power { 5 Objectives { 6 and 6a (Cover-glass { 7 and 7a thickness { 8 0,17 mm) { 9 140 180 210 250 325 420
200 255 300 350 460 600
260 335 400 450 600 780
300 400 450 550 700 940
380 500 575 700 900 1150
Water-Immersion { 10 405 535 610 745 950 1200
Homogeneous { 1/10 Oil- { 1/12 Immersion { 1/16 310 415 470 575 730 940
435 555 650 800 1000 1300
520 700 800 950 1250 1680
{ 16 Dry Lenses { 8 { 4 45 60 70 85 110 140 Apochromatics
95 125 145 170 225 295
210 270 315 375 500 635
Oil-Immersion 2 390 510 585 705 920 1180