Launched on the ASX in 2004, Structural Monitoring Systems Plc is an Australia-based company involved in the design and manufacturing of electronic products, as well as providing manufacturing services to the aviation industry. The company’s segments encompass Comparative Vacuum Monitoring (CVM), avionics and audio systems, and intellectual property. The CVM segment measures the differential pressure between fine galleries with a low vacuum and galleries in the atmosphere in a simple manifold. The CVM system comprises a sensor applied to the area for testing or inspection, a vacuum source for controlling and applying a partial vacuum to the sensor, a differential pressure flow meter device with output options interfacing with control systems, and software management systems processing the data. The avionics and audio systems segment focuses on the design and manufacturing of audio systems.