Despatch Industries, Minneapolis, Minn., has combined with Ransco Industries, a designer and manufacturer of environmental test and simulation equipment in Oxnard, Calif. Production and distribution of Ransco products has already begun in the Despatch manufacturing facility in Lakeville, Minn. Ransco product management, design and support will remain in Oxnard, and in September, Ransco's service and support facility in Detroit will move to a new and larger location.