High limit chi and angular difference measuring tool

The utility model relates to an oil drilling angular difference measuring tool technology field is a high limit chi and angular difference measuring tool, including directional sub, the high sideline of screw rod, screw rod drilling tool and gao bian chi, directional sub and screw rod drilling tool fixed connection are in the same place, and the high sideline of screw rod distributes on the screw rod drilling tool, and the high sideline of screw rod is aimed at to high limit chi fixed mounting 0 scale on the screw rod drilling tool and on the scale mark, the last fixed key that is equipped with of directional sub, and the last plumb line that is equipped with of fixed key, the plumb line lower extreme points to the scale mark of high limit chi. The utility model has the advantages of reasonable and compact structure, convenient to use during the measurement, requires the up time needle to measure, and the reverse scale from the right side to a left side of high limit chi accords with the custom that high back