Leica Geosystemsintroduced DISTO products, hand-held laser measurement devices. There are four DISTO models:DISTO lite4, DISTO classic4, DISTO pro4 and DISTO pro4a. DISTO products measure distance, area and volume, with a standard accuracy of ± 3 mm and a range of 0.3 to 100 m. DISTO lite4 features a positioning bracket and alignment aid. DISTO classic4 is designed for those who use Pythagorean calculations and tracking functions. DISTO pro4 is the first hand-held laser rangefinder that features a standard alphanumeric keyboard. DISTO pro4a has all the features of pro4 with an enhanced accuracy to ± 1.5 mm. (Leica, Norcross, Ga.)