The EGT probes do not come with a calibration sheet or chart. They are a standard Type K thermocouple device whose output follows the ITS-90 Type K thermocouple linearization curve. Most modern day instrumentation can read a Type K thermocouple directly. In some cases, thermocouple amplifiers are required to interface between the thermocouple & the particular measuring instrument. But if you absolutely must have a calibration sheet then we can send the probe out to an independent agency who will issue us a 5 or 10 point Calibration Test Report that includes data. There is an additional charge for this service.