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420 Stereo Microscope Auxiliary Lenses
Auxiliary objective lens for the National Optical 420 series microscopes.
Untitled Document
|
Objective
Lens |
Magnification
Change |
Field Diameter
Change |
420 Microscope
Working Distance |
|---|---|---|---|
|
1x
|
None
|
None
|
75mm
|
|
0.5x
|
- 50%
|
+ 100%
|
131mm
|
|
0.75x
|
-25%
|
+ 25%
|
91mm
|
|
1.5x
|
+ 50%
|
- 35%
|
33mm
|