Instrumentation Technical Services (ITS), a wholly owned subsidiary of Applied Technical Services, LLC (ATS), is a West Chester, PA-based provider of calibration, metrology, and instrumentation services serving highly regulated industrial markets throughout North America. Such instruments might include multimeters, gage blocks, micrometers, calipers, pressure gages, torque wrenches, oscilloscopes, digital balances and scales, test weights, force gauges, and test indicators.