Just Normlicht's multi-purpose Proof Top Multi is ideal for several pre-press requirements and adaptable to a number of different workplace conditions. It can be used as a stand-alone unit or placed on existing furniture. When you add the optional trolley, the Proof Top Multi becomes a free-standing, mobile and space-saving Proof Station. The Proof Top Multi, durable, versatile and portable. Aslo included is an hourmeter to keep track of bulb usage and the appropriate time for bulb replacement.