Thomas C Wilson, Inc Vacuum Leak Detector Kit No. 9836 The item appears to be new and unused. TC Wilson?s Vacuum Leak Detector (VLD) is a simple test instrument used to identify leaky tubes, ranging in sizes from 1/4? to 3? outer diameter. Suitable for manufacturers and users of condensers, heat exchangers and other tubular apparatus, the Vacuum Leak Detector is used to accurately pinpoint costly leaks the first time, every time. The VLD Kit contains everything needed for one person to safely test and identify leaky tubes, reducing labor and maintenance costs. Vacuum Leak Detector (Part No. 42823) Fully Assembled with Nozzle (Part No. 41460-1003) Hose Assembly 12-Foot (Part No. 24360-0012) T-Handle Tube Plug (Part No. 42834-1003) Carrying Case (Part No. 42837)