1. networks of lines representing meridians and parallels on which a map is drawn
Usage: cartography; geography
2. grids of fine lines or wires in the eyepiece of an optical instrument used for measurement or positioning
Usage: optics; technical

Examples

• The cartographer carefully aligned the graticules on the world map.
• Students learned to read coordinates using the graticules printed on their atlas pages.
• The telescope’s graticules helped astronomers measure the positions of stars.
• Modern GPS devices display digital graticules showing latitude and longitude.
• The surveyor adjusted the graticules in his transit instrument.
• Geographic graticules divide the Earth into a systematic grid pattern.