Mich. Comp. Laws § 560.132

Sec. 132. All plats shall be legibly prepared according to the following general requirements: (a) On 1 or more sheets, 18 inches wide by 24 inches long in size, leaving a 1 1/2 inch binding margin and a 1/2 inch margin on all other sides. (b) Of an approved material, according to published specifications of the department of the treasury. (c) Drawn or printed with nonfading black ink true to an adequate and plainly readable scale of not more than 100 feet to an inch. (d) The name of the plat shall not duplicate the name of any plat previously recorded in the same county unless it is an addition contiguous to the same, or which is a part of the same previously approved preliminary plat under section 120. The first subdivision bearing the name may be designated as number 1, and all additions to it shall be consecutively numbered, beginning with number 2. (e) Lots shall be numbered consecutively beginning with lot number 1 in the first subdivision bearing the name and continuing in consecutive order throughout the several additions. (f) A north point shall be properly located thereon.