E Instruments_Gas Sniffer 500The model 7899 combustible gas sniffer from E Instruments, Langhorne, Pa, is a portable device for detecting leaks from piping or appliances. The device is equipped with a highly sensitive tip to pinpoint small leaks of combustible gases and hydrocarbons such as natural gas, methane, propane, butane, or liquid petroleum gas. The portable tool includes an 11-inch flexible probe for reaching difficult places; produces readings in units of PPM, %vol, and %LEL; and has a range of 0 to 10,000 ppm. Features include auto zero-drift adjustment, a large visual LCD and bar graph display, an audio alarm, and a hold function. For more information, visit E Instruments.