The company says it will accurately verify surface temperatures with two of the most reliable temperature sensors:
•  Non-contact micro-machined thermopile
•  Type K thermocouple input (free T/C included)
The non-contact infrared measurement is suitable for non-reachable locations. It gives instant readings, safely and reliably. The thermocouple can be used for high precision measurement of contact surfaces, gases, and liquids.

The OS768-LS can also help measure emissivity. The Type K thermocouple contact can be used to measure true temperature. Then, the non-contact infrared can be used to get the surface temperature; adjust the emissivity until they are the same, with the option to use the same emissivity setting for that object next time. Omega says this removes guesswork and there is no need to look up on the Emissivity Table