The UEi LPKIT Pressure and Leak Testing Pro Kit all you need for detecting gas leaks and pressure amount. The kit includes the UEi CD100A Combustible Gas Leak Detector and the EM151 Electronic Manometer. The CD100A features an extended 18 inch gooseneck for hard to reach places, easy to decipher audio and visual leak guide, and a tip light that makes the area of the leak shine bright. The EM151 Electronic Manometer measures positive and negative pressures in inches and features a simple two-button interface.Kit Includes: Combustable Gas Leak Detector (CD100A), Electronic Manometer (EM151)