AYA Instruments offers a line of high precision clamp-on current probes with models that can measure alternating current or direct currents ranging from 1 milliampere to 15,000 amperes. The organization is an engineering and manufacturing company that designs and markets precision electronic measuring instruments and metering transformers. Its products are used by the electric power industry and for process control applications. AYA Instruments was established in 1990 in Pittsburgh.