We have designed and built a directional gas analyzer (DGA) which enables us to localize distant, concentrated sources of gas much as a spot exposure meter in a 35-thinsp;mm camera enables one to localize distant sources of light. The DGA measures the time-of-flight of metastable, electrically neutral molecules between a pulsed electron gun and an Auger detector, with various species being distinguished by their characteristic, thermal velocities. A set of metal tubes, installed between the electron gun and the detector, collimates the beam of metastable atoms and so provides the directional sensitivity. With the preliminary version of our instrument, it is easy to resolve he structure of an array, consisting of point gas sources separated from each other by 6 cm, which is 65 cm distant from the DGA.