Transcat Dayton Calibration Lab and Services "Accredited calibrations to ISO/IEC 17025 Multiple service levels available Pickup and delivery throughout Ohio and Indiana Calibration of all major leading manufacturers In-lab and onsite services available Calibration information available via C3, our online portal Our Dayton, OH lab is a ISO/IEC 17025 Accredited general purpose calibration lab that provides local in-lab and on-site calibration services to the surrounding region. Our Dayton lab is one of two of our labs that offers Primary Level Reference Temperature calibration up to 660.323°C.