Calibration and modeling of a dual-axis inclinometer

Methods are described to calibrate and model a dual-axis inclinometer, using a single-axis sine bar, by rotating the inclinometer axially on the sine bar and using a cross-coupled polynomial expansion model. A simple combination of angle blocks and fixturing is used to generate the axial rotations. An example of how the method was used to calibrate the model CST92 panel corner setting tools for the Robert C. Byrd Green Bank Telescope (GBT) is described.