Grid Material shows very useful grid on the surfaces of meshes.
Using the Grid material
Babylon.js documentation
As the grid material is a babylonJS extension, it is not included in the main babylon.js file. In order to use the material, please download and reference the extension from the github repo using babylon.gridMaterial.js or its minified version babylon.gridMaterial.min.js. The default grid behaviour does not require any setup and displays a black and white grid on your meshes.
Source Code: https://playground.babylonjs.com/#1UFGZH#12