J.H. Metrology Co. is a full-service laboratory devoted to calibration and repair of electronic and physical and dimensional test equipment. The company offers onsite services to accommodate large quantities and sizes of equipment. It provides calibration services for many types of equipment, including standards, meters, frequency and time, waveform monitoring, temperature measuring, radiation frequency and microwave, telecommunication and vibration. J.H. Metrology Co. is ISO 9002 and ISO/IEC 17025 certified. It serves customers throughout the United States. The company also sells used test equipment. J.H. Metrology Co. was founded in 1974 and is based in Rolling Meadows, Ill.