... such as dark-field illumination, inclinable and/or rotatable microscope heads or stands for convenient customer display, jewelery clips ... -42mm 1.Adjustable-Tilt Stage Microscope,easy to operate;2.Stereo zoom optics with stable optical lens,sharpe image and strong ... good variety of types for choose, such as:Gem Microscope,Gem Refarctometer,Gem Lab Kit,Spectroscope, Polariscope,Jewelry Magnifier, ...