Specifications:

• Type: Horizontal Scale Ruler
• Thickness: 1.5 mm
• Ruler: 10 mm (100 scales)
• Product Type: Micrometer
• Model Number: MS-1-I
• Material: Optical Glass
• Magnification: NONE
• Item Name: Microscope Eyepiece Micrometer
• DIV: 0.1 mm
• Diameter: 20 mm, or 20.4 mm, or 21 mm, or 22 mm, or 23 mm, or 24 mm, or 27 mm
• Brand Name: YEGREN