Microscope eyepiece lens Micrometer Calibration Slide Measuring Glass DIV=0.05MM D=25MM or D=20MM

Description

Material:Glass DIV:0.05 mm Diameter: 25mm or 20mm, will be send randomly. Grid:0.5*0.5MM(Big),0.25*0.25(Small) Package: 1 piece with box(withsponge) Brightly Illuminated Grid Lines This calibration slide in box which with sponge,very luxury and delicate Great for Calibrating Your Microscope or Microscope Camera Reticles