Strain Gage Measurements on Shafting Using Telemetry Equipment. Sometimes it is necessary to verify the nominal and/or alternating stress levels in shafting. IDC has experience in using telemetry equipment to quickly and easily get this data. Linear Vibration Measurements on an Engine and Skid. Perhaps linear vibration levels need to be documented at start-up, are not within specifications, or have caused a failure. A test setup with appropriately placed accelerometers can determine the natural frequencies and modal motion of the system.