Profile: CPA Instrument Services Ltd provides calibration services such as instrument calibration and instrument repairs. We are an ISO 9001-2000 certified company. Our calibrations are carried out using UKAS calibrated test equipment. Our management services include calibration reminders, overdue statements, and collection & delivery services. Our on site calibration/repair service can be applied to almost every type of instrumentation available, ranging from the most basic of pressure gauges through to the highly complex process control instrumentation.