This standard specifies the markings of microscope objectives and eyepieces and the color and position of color circles indicating the objective magnification and immersion medium. This standard applies to objective lenses and eyepieces for biological, metallographic and polarizing microscopes.
JB/T 7398.1-1994 history
1994JB/T 7398.1-1994 Symbols for Microscope Objectives and Eyepieces