Compensator is designed with four suspension wires made of super-high-tensile metal that features minimal thermal expansion coefficient. Excellent 32X magnification with large aperture that allows more light for a sharper image. Horizontal and vertical cross hairs with 1:100 stadia lines - measures level, alignment & estimates distance. Fine motion horizontal tangent knobs on left and right sides allow friction braked rotation, endless horizontal drive and precise pointing and angle measurement. Solid leveling metal base with three precision leveling screws provides stability and accuracy in all weather and job site conditions. 360° Graduated horizontal circle in 1-degree increments for layout applications. 10’/2mm circular bubble vial with 90-degree mirror for accurate and quick set-up.