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a jeweler checking gemstone quality
Lens size: 5″ (127mm)
Prevent from getting dirts and scratch
this gauge offers a measuring range from 0 to 20mm
as well as treated diamonds
Motic Gem Microscope GM171-Trinocular Gold & Silver Scales a jeweler checking gemstone qualityMicroscope Head The SMZ171 stereo head is an excellent choice for jewelry and gem stone inspection at an affordable price. The parfocal zoom ratio is 6. 7: 1, offering a magnification range of 7x 50x with dual sided zoom controls and a working distance of 110mm. The head is inclined 45 and includes lnear sliding interpupillary adjustment of 50mm 75mm. High Eyepoint widefield 10X F. N. 23 eyepieces come standard, offering dual dioptric adjustment and a
