Calibration services provided, A2LA accreditation certificate number 1877.02. Scope of accreditation to ISO/IEC 17025:2017, ANSI/NCSL Z540-1-1994 & ANSI/NCSL Z540.3-2006. Trescal is a test equipment calibration laboratory serving life science, manufacturing, aerospace and defense industries throughout the U.S. and abroad. We offer repair, calibration and sales of precision test and measurement equipment used by process control professionals including Instrument, Mechanical, & Electrical Technicians, Quality Specialists and Process Engineers.