At the end of 2005, the Dutch service provider Frontline Rigging added another four ChainMaster VarioTrolleys, which are capable of moving at up to 40m per minute, to its inventory. Combined with a PC-based ChainMaster controller, the VarioTrolley provides complete horizontal movement combined with precise positioning.

ChainMaster, maker of the VarioLift, has been producing chain hoists and controllers for theatrical and show stages since 1990. Among ChainMaster’s greatest successes has been the development of the VarioLift.