The azimuth must be set right in order to detect all the satellites in the viewable arc. Most dishes have a flat plate on the mount that can be used as a sighting reference. A hand-held compass is the most effective type for lining up the mount. Remember that a correction for magnetic variation is necessary. The polar axis angle or inclination angle is within fractions of the site latitude.
Most mounts have one or two long threaded rods that are used to adjust the polar axis angle.
An inclinometer resting on the axis bar or back part of the mount is used to set this angle. Setting the Polar Axis Angle - The polar axis angle is set by placing an inclinometer on the polar bar and then raising or lowering the dish to that angle. The declination offset adjustment lowers the sight of a dish to the arc of the satellites. Declination is greater in locations farther away from the equator. Just like the offset angle, it is measured with an inclinometer.