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KDJ-1型磁性定向仪，是采用罗盘磁针式测斜仪，对孔底定向工具及孔底直接定向方法等结合设计的直接定向仪器，即用测斜仪可直接测定孔内定向标记方向。该仪器采用了简易和经济的办法解决了直孔定向问题。一、用 途KDJ-1型磁性定向仪适用于非磁性矿区，直径56mm以上钻孔连续作用造斜器、偏心楔以及孔底动力钻具（螺杆钻，涡轮钻）的测斜定向。该仪器一次下井测量可同时测得钻孔方位角，顶角和造斜工具面向角三个参数。特别适用于解决钻孔顶角小于3°时的测斜定向，但也用于钻孔顶角大于3°时的测斜定向。该
KDJ-1 Magnetic Direction Finder is a direct-oriented instrument designed with compass magnetic pin inclinometer, a directional tool at the bottom of the hole and a direct orientation method at the hole bottom. That is, the direction indicator can be directly measured by the inclinometer. The instrument uses a simple and economical way to solve the problem of straight hole orientation. First, the use of KDJ-1-type magnetic directional instrument for non-magnetic mining area, the diameter of 56mm or more continuous play drilling whipstock, eccentric wedge and hole bottom power drill (screw drill, turbine drill) of the diagonal orientation. The instrument downhole measurement can be measured simultaneously drilling azimuth, apex angle and the angle of the beveling tool three parameters. It is especially suitable for solving the direction of the inclinometer when the drilling apex angle is less than 3 °, but also for the direction of the inclinometer when the drilling apex angle is greater than 3 °. This