A: Most LIDARs today are laser rangefinders, such as those used by surveyors and estate agents. These can measure distances accurately. At ISI, we specialise in more innovative uses of LIDARs, using them to measure pollution levels, process leaks, surface profiles, and for the identification of molecules both in gases and as liquids. We also use them to make measurements of distances dramatically more accurately than the everyday versions of LIDARs.