Pressure measuring devices that display the pressures in the water supply line for the fresh hot water sanitizing rinse must have increments of 1 pound per square inch (7 kilopascals) or smaller and must be accurate to plus or minus 2 pounds per square inch (plus or minus 14 kilopascals) in the 15 to 25 pounds per square inch (100-170 kilopascals) range.
Nev. Admin. Code § 446.317
NRS 439.200, 446.940