420 Series Microscopes Ring Light Adapter 931-420


420 Series Microscopes Ring Light Adapter 931-420

420 Series Microscopes Ring Light Adapter 931-420



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Ring light adapter ring, 54.5mm O.D., 18mm extension. For use on the following National Optical Series: 420, 420T, DC5-420T and DC3-420T.

SKU: 931-420
Price: $17.00 


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420 Stereo Microscope Magnification Chart

Eyepieces Objective / Auxiliary Lens
1x
(Standard Obj. Lens)
0.5x
(Optional Aux. Lens)
0.75x
(Optional Aux. Lens)
1.5x
(Optional Aux. Lens)
Working Distance
80mm
Working Distance
137mm
Working Distance
90mm
Working Distance
34mm
Zoom
Range
Field
Size
Zoom
Range
Field
Size
Zoom
Range
Field
Size
Zoom
Range
Field
Size
5x
5x - 20x
5x, 22mm
20x, 5.5mm
2.5x - 10x
2.5x, 44mm
10x, 11mm
3.75x - 15x
3.75x, 29.3mm
15x, 7.3mm
7.5x - 30x
7.5x, 14.7mm
30x, 3.7mm
10x
10x - 40x
10x, 20mm
40x, 5mm
5x - 20x
5x, 40mm
20x, 10mm
7.5x - 30x
7.5x, 26.7mm
30x, 6.7mm
15x - 60x
15x, 13.3mm
60x, 3.3mm
15x
15x - 60x
15x, 13mm
60x, 3.25mm
7.5x - 30x
7.5x, 26mm
30x, 6.5mm
11.25x - 45x
11.25x, 17.3mm
45x, 4.3mm
22.5x - 90x
22.5x, 8.7mm
90x, 2.2mm
20x
20x - 80x
20x, 10mm
80x, 2.5mm
10x - 40x
10x, 20mm
40x, 5mm
15x - 60x
15x, 13.3mm
60x, 3.3mm
30x - 120x
30x, 6.7mm
120x, 1.7mm