420 Stereo Microscopes
Optical Specification Chart

Eyepieces

Zoom
Objective
Position

Standard Objective
1X
(supplied)

Auxiliary Objective
0.5X
(Optional)

Auxiliary Objective
0.75X
(Optional)

Auxiliary Objective
1.5X
(Optional)

Working Distance 79mm

Working Distance 137mm

Working Distance 90mm

Working Distance 34mm

Total
Magnification

Field
Size

Total
Magnification

Field
Size

Total
Magnification

Field
Size

Total
Magnification

Field
Size

WF5X
Field No.22
(Optional)
(No Reticle Holder)
Interpupillary
Distance
59~83

1X

5X

22mm

2.5X

44mm

3.75X

29.3mm

7.5X

14.7mm

2X

10X

11mm

5X

22mm

7.5X

14.6mm

15X

7.3mm

3X

15X

7.3mm

7.5X

14.7mm

11.25X

9.8mm

22.5X

4.9mm

4x

20X

5.5mm

10X

11mm

15X

7.3mm

30X

3.7mm

WF10X
Field No. 20
(Supplied)
Accepts Reticle 23mm O.D.
Interpupillary Distance
54~78

1X

10X

20mm

5X

40mm

7.5X

26.7mm

15X

13.3mm

2X

20X

10mm

10X

20mm

15X

13.3mm

30X

6.7mm

3X

30X

6.7mm

15X

13.3mm

22.5X

8.9mm

45X

4.4mm

4x

40X

5mm

20X

10mm

30X

6.7mm

60X

3.3mm

WF15X
Field No. 13
(optional)
(No Reticle Holder)
Interpupillary Distance
50.5~74.5

1X

15X

13mm

7.5X

26mm

11.25X

17.3mm

22.5X

8.7mm

2X

30X

6.5mm

15X

13mm

22.5X

8.7mm

45X

4.3mm

3X

45X

4.3mm

22.5X

8.7mm

33.75X

5.8mm

67.5X

2.9mm

4x

60X

3.25mm

30X

6.5mm

45X

4.3mm

90X

2.2mm

WF20X
Field No. 10
(optional)
(No Reticle Holder)
Interpupillary Distance
52~76

1X

20X

10mm

10X

20mm

15X

13.3mm

30X

6.7mm

2X

40X

5mm

20X

10mm

30X

6.7mm

60X

3.3mm

3X

60X

3.3mm

30X

6.7mm

45X

4.4mm

90X

2.2mm

4x

80X

2.5mm

40X

5mm

60X

3.3mm

120X

1.7mm

Model

Specimen Height

Specimen Height

Specimen Height

Specimen Height

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

DC3-420TH

0.0mm

93mm

0.0mm

19mm

0.0mm

66mm

0.0mm

120mm