Microscope reticle

Microscope reticles are clear circular glass inserts with a scale inscribed on them. It is used in place of the standard eyepiece of the microscope. There are two crossed rulers inside the eyepiece micrometer. Each ruler is 12mm long  or 16mm long and is divided into 120 cells or 160 cells. Each division is 0.1mm.Div.x: 0.1mm; y: 0.1mm, 12mm/120; 16mm/160;Diameter range from D17mm~D29mm

Typical size of microscope reticle