Trace gas leak detector with built in gas control circuit for supplying gas to test part. Accurately locate leaks in finished products such as engines, castings, and find leaks which are time consuming or even impossible to find with soap film, dunk tanks and other mechanical techniques. The 1210 features Rapid response Rugged construction Multiple alerting functions Helium or Argon tarce gas detection. Trace gas supply control. Fast and easy to set up -no calibration is required.