The Small Scanning Target for Rotary & Pipe Lasers is a magnetic plate that easily mounts to the ceiling grid. It enables surveyors to draw a line of focused laser light on any surface. This scanning card is perfectly compatible with the Topcon RL-VH4DR rotary laser, TPL-3 and TPL-4 pipe lasers. In addition, this red scanning target features a hole where a lanyard can be attached.