graticule
/ˈɡrætɪˌkjuːl/
noun
- A network of lines on a map or chart that represent latitude and longitude.
- The map's graticule helped the sailors find their exact position.
- The graticule on the globe shows lines of latitude and longitude.
- Geographers use a graticule to divide the Earth into coordinates.
- A scale or grid of lines in the eyepiece of a microscope or telescope used for measuring or aiming.
- The scientist aligned the cell with the graticule in the microscope.
- The sniper's scope had a graticule for precise targeting.
- A graticule in the telescope helps astronomers measure star distances.