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Zeiss double loupe, best of all the large loupes

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(Single item price excluding VAT: £76.39)

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10X20 by Zeiss
(10X magnification, 20mm diameter lens)

Has to lenses on top of each other, approx. 6X and approx. 4X magnification, can be used individually or combined to give 10X magnification.

To help you compare the 10X loupes, a summary of this item is shown in blue:

10X12 - 10X13 - 10X14 - 10X20 - 10X21 - 10X21 - 10X23 - "30X21”
(magnification X diameter of lens, mm)

basic - good - very good – EXCEPTIONAL

There are also reviews of loupes, click here.


As a 10X Zeiss this really is the best quality of all the large loupes. Whenever I get a sample of a new loupe that is meant to be "the best" I compare it with this one, then I sigh and concede that this Zeiss is still the best on the market.

I use this as a 'test' on our exhibition stand - when a customer insists on having the best but can't see the difference between this and a £4.50 loupe - it's time for them to give up and go to see their optician.

A note about the magnification. Zeiss used to quote the magnification as 6.66X with 3.33X = 9.99X combined; then they decided to name it "6.6X with 3.4X" = 10X combined. I think their customers were getting confused with all the numbers, so now they call "3X with 6X = 9X combined. It's all the same loupe!


Magnification / lens size in mm: 10X20

Lens material: plastic

Lens type: Unknown, probably a triplet.

Type: jeweller's loupe (small, pocket-size, folds into its plastic casing)

Origin / brand: genuine Zeiss by Carl Zeiss Vision Ltd (the old "West German" Zeiss, not to be confused with the lesser quality "East German" brand of Zeiss Jena).

Casing: plastic

Finish: cream and grey

Presentation / extras: printed box

Further information

Everything you need to know about magnifiers and magnification.

See information about (and reviews of) loupes (small high-power folding jewellers' magnifiers).

See information about (and reviews of) binocular (head-worn) magnifiers- especially the surgeons-type.

See a guide to magnifiers for the partially-sighted.

See loupes with UV lights.

Video (electronic) magnifiers, video magnifiers compared.

Products: see pocket microscopes and phone microscopes, click here.

With most magnifiers* magnification and working distance are related. Download our Excel sheet, enter a magnification to see the resulting working distance, enter a working distance to see the resulting magnification.

* excluding surgeons-type, digital & phone magnifiers, and microscopes.

Free gift details

If you would like one of the following free gifts with this product, select one from “Select your free gift” above.

Light-Loupe, 4X with light (lightmag) (RRP £5.75 )

Double Loupe, 2 lenses combined = 10X (RRP £6.25 )

Pendant magnifier on cord (RRP £3.25 )


Ask a Question
  • What should I buy for razor sharpening. Please recomend

    For razor sharpening, I've really no idea, I don't know anything about razor sharpening.

    For inspecting the blades of razors I know you need exceptionally good quality, so this would be about the best.