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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
with light
34cm or 42cm working distance
Reach (the 'reach' of the arm) 600mm (24 niches) to 1000mm (39 inches)
5 points) and up to 50g (250 carat) - please see "Technical Specification"
I haven't tested thousands of stones but I estimate that you would get the correct result over 95% of the time
10X13 Zeiss D40 Aplanatic-Achromatic 40D, best of all the small loupes Magnifier Style_Loupe or eyeglass with lightSummary 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.