This is a Sources Sought notice for market research to identify vendors capable of providing off-site calibration and repair services for approximately 353 government-owned Temperature and Relative Humidity (TRH) probes. The contractor must supply all personnel, equipment, facilities, and materials, with calibrations traceable to NIST standards and compliant with AR 750-43. Performance of services will be off-site, supporting the Dugway Proving Ground Meteorology Branch. No budget amounts or submission timelines are specified in this description. This is not a solicitation or request for proposal.