PDFWAC 246-215-04580
Utensils and temperature and pressure measuring devices—Good repair and calibration (FDA Food Code 4-502.11).
(1) utensils must be maintained in a state of repair or condition that complies with the requirements specified under Part 4, Subparts A and B, or must be discarded.
(2) food temperature measuring devices must be calibrated in accordance with manufacturer's specifications as necessary to ensure their accuracy.
(3) Ambient air temperature, water pressure, and water temperature measuring devices must be maintained in good repair and be accurate within the intended range of use.