Use a Jewelers Eyeglass or Loupe

Eyeglass

Excellent results and magnification can be obtained by placing the wide end of the eyeglass close to the eye and bring the item to be viewed into focus at the narrow end, usually about 1”-2” away. best results with items well lit.Many uses including stamps ,gold and silver hallmarks,coins .The detail can be fascinating

Loupe ( sometimes called Triplex or Triplet)

Excellent results and magnification can be obtained bringing the loupe very close to the eye, and the object almost up to the lens until in view.The lens area is small. You can view through either side, is foldable so the lens can be protected whilst in a pocket, because of this useful for "out in the field work" suitable for gold and silver hallmarks , coins (popular with metal detectorists) gemstone

Clipon for Glasses and spectacles (Hands Free)

Excellent results and magnification can be obtained by attaching the clip to either side of your spectacles and pulling the eyeglass down.Sutiable for people who need to wear glasses or for those that want there hands free to hold the item being viewed, not usually as strong as the hand held ones but still very useful for stamps and coin collectors and also watch and jewellery repairs

The above text partially reproduced with kind permission of

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