Specification Chart - National 425 Series Instructions Manual

Stereoscopic zoom microscopes
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Zoom
Eyepieces
Objective
Position
.75X
WF5X
Field No.23
1X
(Optional)
2X
# 605-425
Does Not Accept
3X
Reticle
Interpupillary
4X
Distance
52~77
5X
.75
WF10X
Field No. 23
1X
(Supplied)
# 610-425
2X
Accepts Reticle
3X
24.95mm O.D.
Interpupillary
4X
Distance
49~74mm
5X
.75X
WF15X
Field No. 17
1X
(Optional)
2X
# 615-425
Does Not Accept
3X
Reticle
Interpupillary
4X
Distance
47~72mm
5X
.75X
WF20X
Field No. 13
1X
(Optional)
2X
# 620-425
3X
Does Not Accept
Reticle Interpupillary
4X
Distance
46~71mm
5X

SPECIFICATION CHART

Standard Objective
(supplied)
Working Distance
113mm
Total
Field
Magnification
Magnification
Size
3.8X
30.7
5X
23mm
10X
11.5mm
15X
7.7mm
20X
5.8mm
25X
4.6mm
7.5X
30.7
10X
23mm
20X
11.5mm
30X
7.7mm
40X
5.8mm
50X
4.6mm
11.3
22.7mm
15X
17mm
30X
8.5mm
45X
5.7mm
60X
4.3mm
75X
3.4mm
15X
17.3mm
20X
13mm
40X
6.5mm
60X
4.3mm
80X
3.3mm
100X
2.6mm
5
Auxiliary Objective
0.5X
(Optional)
# 705-425
Working Distance
192mm
Total
Field
Magnification
Size
1.9X
61.3MM
2.5X
46mm
5X
23mm
7.5X
15.3mm
10X
11.5mm
12.5X
9.2mm
3.8X
61.3
5X
46mm
10X
23mm
15X
15.3mm
20X
11.5mm
25X
9.2mm
5.6X
45.3
7.5X
35mm
15X
17mm
22.5X
11.3mm
30X
8.5mm
37.5X
6.8mm
7.5X
34.7mm
10X
26mm
20X
13mm
30X
8.7mm
40X
6.5mm
50X
5.2mm
Auxiliary Objective
1.5X
(Optional)
# 715-425
Working Distance
50mm
Total
Field
Size
5.6X
20.4mm
7.5X
15.3mm
15X
7.7mm
22.5X
5.1mm
30X
3.8mm
37.5X
3.1mm
11.3X
20.4mm
15X
15.3mm
30X
7.7mm
45X
5.1mm
60X
3.8mm
75X
3.1mm
16.9X
15.1mm
22.5X
11.3mm
45X
5.7mm
67.5X
3.8mm
90X
2.8mm
112.5X
2.3mm
22.5X
11.6mm
30X
8.7mm
60X
4.3mm
90X
2.9mm
120X
2.2mm
150X
1.7mm

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425t-440pll-10425t series

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