- C5 type 0.5 mm net eyepiece ruler, Diameter 19mm
- 0.5 mm net shaped eyepiece ruler, the area of 5 * 5mm2 scale, each divided into 10 equal parts, each small square glass 0.25mm2, diameter of 19mm
- This calibration slide in box which with sponge, very luxury and delicate
- Great for Calibrating Your Microscope or Microscope Camera Reticles