ACCESSORY INFORMATION The Laser Scaler attachment for the VideoRay Pro 4 ROV systems is a plug and play measurement device that can be attached or removed from the vehicle in seconds. The laser accessory projects two vertical "fan" beams precisely 7.5 cm [3 in) apart for scaling, estimating, or measuring applications. The "fan" nature of the laser beams fills the entire field of view of the ROV camera so that no tilting mechanism is necessary. The laser scaler can be used with existing VideoRay accessories such as the manipulator arm and sonar systems. This attachment is compatible with VideoRay BASIC LASER SPECIFICATIONS Depth Rating: Beam Alignment Separation: Beam Divergence: Beam Power: SIDE VIEW