Small Pocket Chrome Plated Triplet Jewelry Loupe 20X Magnification

Small Pocket chrome-plated Triplet Jewelry Loupe Magnification 20X

The triplet-type loupe is essential because it has been made specially to correct two problems other types of magnifiers have-the presence of traces of color(chromatic aberration) normally found at the outer edges of the lens; and visual distortion(spherical aberration), also usually at the outer edges of the lens.

Correction for visual distortion is the triplet-type creates what we call flatness of field.If we were to look at a gem with a magnifier that was not a triplet-type,any flaw seen at an outer edge of the magnifying lens would be distorted,more or less so depending on how close the flaw is to the edge of viewing lens.

Specifications:

Jewelry loupe With Magnification of 20X Triplet and Size of Lens with 21mm

Fable brand Jewelry Loupe with:

1. Triplet Loupe;

2. Material: Glass;

3. Magnification:20X;

4. Diameter: 21mm;

5. with chromium plating outer casing;

6. Color: chromatic aberration;

7. Distortion: spherical aberration;

Applications: Gemological Laboratory, Gemology school, Jewelry industrial