Here it is, for Nevada anyway
12.040 Specifications for chips.
1. Unless the chairman approves otherwise, chips must be disk-shaped, must be .130 inch
thick, and must have a diameter of:
(a) 1.55 inches, for chips used at games other than baccarat;
(b) 1.55 inches or 1.6875 inches, for chips used at baccarat; and
(c) 1.6875 inches, for chips used exclusively at race books and sports pools or other counter
games.
2. Each side of each chip issued for use exclusively at a race book, sports pool, or particular
game must bear an inscription clearly indicating that use of the chip is so restricted.
(Adopted: 6/87.)
