The device features a large aperture, built in a rugged water resistant housing. It’s main applications are measuring position deviations over long distances, monitoring low frequencies displacements of buildings and bridges. The system measures optical beam positioning featuring a large optical aperture, with update rate of up to 30 Hz. Measured both CW and pulsed beams, up to 3 beams simultaneously. A complete system based on a large aperture camera head with USB2.0 interface and analysis and display software. OS are Windows XP/2000/Vista/7/8/10.