graticulation

from The Century Dictionary.

• noun The division of a design or draft into squares, as an aid in producing a copy of it in larger or smaller dimensions.

from the GNU version of the Collaborative International Dictionary of English.

• noun The division of a design or draught into squares, in order the more easily to reproduce it in larger or smaller dimensions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The division of a design or draught into squares, in order the more easily to reproduce it in larger or smaller dimensions.