MEASUREMENT APPARATUS, MEASUREMENT SYSTEM, AND, MEASUREMENT METHOD

PROBLEM TO BE SOLVED: To provide a measurement apparatus capable of dealing with rods of various diameters from a small diameter to a large diameter and capable of accurately measuring the number and length of rods.SOLUTION: A measurement apparatus 100 is used in an excavating apparatus for performing excavation by sequentially adding a steel posterior rod to a steel distal end rod 20 having a bit at the tip attached thereto. In the measurement apparatus for measuring the number or length of a plurality of rods used for excavation with a rotation amount of a rotating body on the basis of a rotating body 102 rotating in contact with surfaces of the distal end rod and the posterior rod, the rotating body is brought into contact with the surface of the rod by magnetic force.SELECTED DRAWING: Figure 4 【課題】細径から太径まで種々の径のロッドに対応可能であって、ロッドの本数や長さを正確に測定可能な測定装置を提供する。【解決手段】測定装置１００は、先端にビットを取り付けた鋼製の先端ロッド２０と先端ロッドに鋼製の後行ロッドを順次継ぎ足して掘削を行う掘削装置に用いられ、先端ロッドと後行ロッドの表面に接触して回転する回転体１０２に基づいて、回転体の回転量をもって掘削に用いられた複数のロッドの本数または長さを測定する測定装置において、回転体を磁気力により、ロッドの表面に接触させる。【選択図】図４