Measuring jig

The utility model relates to the technical field of measurement, in particular to a measuring jig which comprises a transverse measuring scale, a measuring scale assembly is installed on the transverse measuring scale through a first sliding assembly, the measuring scale assembly can move in a reciprocating mode in the extension line direction of the transverse measuring scale, and the measuring scale assembly comprises a first measuring scale and a second measuring scale. The first measuring scale is perpendicular to the transverse measuring scale and reciprocates in the perpendicular direction of the transverse measuring scale through the second sliding assembly, and the second measuring scale is in sliding connection with the first measuring scale through the third sliding assembly and reciprocates in the extension line direction of the first measuring scale. According to the utility model, the distance between two pipelines on the same plane but not on the same straight line can be measured through the sl