A "graphite grid" refers to a network or pattern made up of graphite lines. It can be used to create a visual representation of data or to draw precise diagrams. Full definition
Adibi offers paintings built on a tight graphite grid, and more expressionistic abstracts (with the grid evident beneath). (bostonglobe.com)
The paintings» starting point begins with a drawn - on graphite grid made up of 1/4» squares, which serves as a guiding infrastructure for the composition. (thestylishflaneuse.com)