Enough conveniently located refrigeration facilities or effectively insulated facilities are to be provided and used to maintain potentially hazardous food at required temperatures during storage. Each facility storing potentially hazardous food is to have a numerically scaled indicating thermometer accurate to plus or minus two degrees Fahrenheit (1.1 degrees Celsius), which measures air temperature in the warmest part of the unit. Recording thermometers may be used in lieu of indicating thermometers.
N.Y. Comp. Codes R. & Regs. Tit. 10 §§ 14-1.44