China (Mainland) Microscope Pen

Specifications: 25× :Minimum of graduation:0.05,Line field:3mm 50× :Minimum of graduation:0.02,Line field:3mm 100× :Minimum of graduation:0.01,Line field:1mm The 25×，50× and 100× pen-microscope are delicate and portable measuring microscope.Which are composed by objective lens,eyepiece and reticule.Diopter can be microscope can be widely applied to many fields such as textile,electrical,diamond sword,printing,agriculture and mineral resources,etc.

It can be also used in jewellery,philately and valuables\'\'s differentiate or cheching,etc.