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. The difference between the two readings, one on the main bar, and one on a flat spot on the back of the dish, should be equal to the declination offset. The easiest way to set the declination offset is with an inclinometer placed on the back surface that is parallel with the face of the dish. Or via a flat board placed in a vertical direction spanning the rims. This reading should be equal to the sum of the polar axis and declination angles.