graticule
/ˈgrætɪkjuːl/noun
1- technical a network of lines representing meridians and parallels, on which a map or plan can be represented〈技〉制图格网; 地理格网; 经纬（线格）网。
1.1
- a series of fine lines or fibres in the eyepiece of an optical device, such as a telescope or microscope, or on the screen of an oscilloscope, used as a measuring scale or an aid in locating objects（望远镜、显微镜等光学仪器目镜上或示波器屏幕上的）分划板, 十字线, 网格。
词源
late 19th cent.: from French， from medieval Latin graticula 'a little grating'， from Latin craticula 'gridiron'， diminutive of cratis 'hurdle'.