10X13 Zeiss D40 Aplanatic-Achromatic 40D, best of all the small loupes Magnifier Style_Loupe or eyeglass or three 1Kg weights

or three 1Kg weights

Lens size: 190X150mm

It is your responsibility to regularly check equipment against known samples

Size folded flat: 50mm (2 inches) tall X 130mm (5

10X13 Zeiss D40 Aplanatic-Achromatic 40D, best of all the small loupes Magnifier Style_Loupe or eyeglass or three 1Kg weightsSummary 10X13 by Zeiss (10X magnification, 13mm diameter lens.) It is achromatic (distortion corrected) and aplanatic (colour corrected) and coated (to prevent reflections. Genuine Zeiss loupe. To help you compare the 10X loupes, a summary of this item is shown in blue: SIZE: 10X12 10X13* 10X14 10X20 10X21 10X21 10X23 "30X21 (magnification X diameter of lens, mm) * useable diameter of this lens (allowing for the rim that holds the lens in place) 12.