JIG FOR GRIPPING A MEASURING INSTRUMENT OF DISPLACEMENT

摘要

A jig for fixing a displacement measuring unit is provided to stably manage the displacement of a rail by accurately measuring the displacement of the rail. A jig for fixing a displacement measuring unit includes a support shaft(23) and a jig body(10). The support shaft is buried under the ground. The jig body is fixed to or supported by an upper portion of the support shaft. A support shaft insertion hole and a support rod engaging hole are formed in the jig body. The support shaft is inserted into the support shaft insertion hole. A first support rod for supporting the displacement measuring unit is inserted into and engaged with the support rod engaging hole.