Researches worked out to cope with material incoherency problems that arouse when inserting, for consolidation ends, reinforced concrete rigid structures into complex structures of masonry vaults. Researches for the Saint-Andre-le-Bas church in Vienne (France) were conducted on the principle that the reinforcement structure would react in a flexible and adjustable way, and aimed at finding the optimal location for applying corrective constraints. Putting up such an installation and measuring the effects produced on masonry, require an appropriate measurement equipment. Description of a vault consolidation equipment endowed with an adjustable constraints generator and flexible transmitters and a measurement outfit (under experimentation now). Advices to define a logical system adapted to works site conditions.