JTL-50F high-precision fiber optic gyro inclinometer is a new type of inclinometer adopting high-precision fiber optic gyroscope as the measurement component, which is a high-precision digital drilling inclinometer specifically designed for measuring borehole inclination and orientation at magnetic mines and in iron bushings. It is used to carry out the high-precision measurement of the vertex angles and azimuths of vertical or directional holes, as well as the accurate measurement of borehole depths. The instrument is widely used in metallurgy, engineering, hydrology, oil, coal field, geology and other borehole logging areas.