All metal construction glass optical system flat semi plan objectives top bottom light anti reflection & hard coating on all optical components high point eyepieces for spectacles adjustable interpupillary distance with diaopter adjustment coarse focusing knobs ce, ul & iso confirmities ideal for inspection of coins, hair, stamp, bullet, gems & dissecting best price to performance ratio About this item Illumination: bottom and reflected. Darkfield condenser with gem clamp Objectives: 2x & 4x eyepieces: hkw high point 10x & 20x Darkfield Attachment with Gem Clamp.
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