Angle of Inclination 1 : That angle in degrees, taken at one or at several points of variation, from the vertical as revealed by a deviation survey; sometimes called the inclination or angle of deviation. (Bul D20)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}