A displacement measuring device wherein a measuring element slidably supported on a main frame is provided and the length or the like of a work to be measured is measured from a displacement value of said measuring element when the forward end of said measuring element is abutted against said work to be measured, characterized in that said device comprises: a feed member provided on said main frame in a manner to be able to reciprocate within a predetermined range; a vertically movable member interlocked with and driven by said feed member, to thereby vertically move said measuring element; and a load applying means for applying a load to said vertically movable member through the utilization of a relative movement between said feed member and said vertically movable member when said vertically movable member is braked after said measuring element has been abutted against said work to be measured.