- (a) Ambient air temperature measuring devices that are scaled in Celsius or dually scaled in Celsius and Fahrenheit shall be designed to be easily readable and accurate to 1.5°C in the intended range of use.
- (b) Ambient air temperature measuring devices that are scaled only in Fahrenheit shall be accurate to 3°F in the intended range of use.
Added at 37 Ok Reg 1373, eff 9-11-20