Explain the Middle Kingdom Egyptians’ use of a grid system to create their art, and address its implications

Please provide the best answer for the statement.

1. While the traditional postures are the same, Middle Kingdom reliefs reflect the use of a grid system that enabled artists to easily copy, transfer, or enlarge a design. This might suggest an awareness of the advantages of larger-scale production methods as an alternative to one-off artistic creation.
2. The grid system regulated a standard height of the figure as well as the proportions of various body parts.
3. The basic unit of measurement was the clenched fist, significant in that it uses the human form, rather than another measurement, as its source, possibly reflecting a belief in human beings’ centrality in the universe.