graticule

noun
UK /ˈɡrætɪkjuːl/
US /ˈɡrætɪkjuːl/

A graticule is a pattern of straight lines drawn on a map or screen to help you find places.

The teacher showed us how the graticule on the globe helps us locate countries.


OTHER MEANINGS

2. A set of fine lines in the eyepiece of a telescope or microscope used for measuring.

He used the graticule in the microscope to measure the width of the cell.

3. A glass plate marked with a scale that is placed in an optical instrument.

The graticule was carefully aligned inside the telescope's eyepiece.

4. A network of lines representing parallels of latitude and meridians of longitude on a map.

The cartographer drew the graticule first before adding the coastlines.