PURPOSE: To automatize a series of work from printing a wiring code K relating to a marker tube M and cutting to fitting and mounting relating to an electric wire C.

CONSTITUTION: A printing unit 10, cutter 20 and a holder 30 are arranged in a longitudinal line, and feed rollers 41, 41... are provided. In the printing unit 10, a wiring code K is printed in the point end part of a marker tube M, and in the cutter 20, the marker tube M is imperfectly cut to form gaps Ma, Ma, so that the point end part is clamped by the holder 30. In the feed rollers 41, 41..., by retracting the marker tube M, the point end part is cut to be separated in positions of the gaps Ma, Ma.