A multi-head mounted scribing device mounting therein a plurality of scribing heads (50, 74), comprising: installation means on which a brittle material-based substrate is installed; a plurality of scribing heads (50, 74) provided to face the brittle material-based substrate on said installation means; a holder joint provided on a tip end of each of said scribing heads (50, 74); and a relative mover (44a, 44b, 45) moving each of said scribing heads (50, 74) and said brittle material-based substrate relatively in a plane along a plane of the brittle material-based substrate, characterized by a tip holder detachably attached to said holder joint at one end thereof, including an attachment which is formed by cutting one surface of said tip holder, and a wheel tip for scribe line formation, rotatably attached at other end thereof the tip holder, and including code recording offset data for scribing and a characteristic management number, said attachment including an inclined portion; wherein the relative mover (44a, 44b, 45) is capable of relatively moving each of said scribing heads (50, 74) at least in one of x-axis and y-axis directions based on the offset data held by said tip holder before scribing, thereby correcting an offset of each of said scribing heads, wherein said holder joint comprises: a circular opening which is formed in a holder of the holder joint; a magnet buried inside said circular opening; and a parallel pin perpendicular to the central axis of said holder joint; and said tip holder is inserted into said circular opening of said holder joint and attracted by said magnet, and is provided at a position where said parallel pin contacts with said inclined portion, said tip holder is exchanged without detaching said wheel tip. installation means on which a brittle material-based substrate is installed; a plurality of scribing heads (50, 74) provided to face the brittle material-based substrate on said installation means; a holder joint provided on a tip end of each of said scribing heads (50, 74); and a relative mover (44a, 44b, 45) moving each of said scribing heads (50, 74) and said brittle material-based substrate relatively in a plane along a plane of the brittle material-based substrate, characterized by a tip holder detachably attached to said holder joint at one end thereof, including an attachment which is formed by cutting one surface of said tip holder, and a wheel tip for scribe line formation, rotatably attached at other end thereof the tip holder, and including code recording offset data for scribing and a characteristic management number, said attachment including an inclined portion; wherein the relative mover (44a, 44b, 45) is capable of relatively moving each of said scribing heads (50, 74) at least in one of x-axis and y-axis directions based on the offset data held by said tip holder before scribing, thereby correcting an offset of each of said scribing heads, wherein said holder joint comprises: a circular opening which is formed in a holder of the holder joint; a magnet buried inside said circular opening; and a parallel pin perpendicular to the central axis of said holder joint; and said tip holder is inserted into said circular opening of said holder joint and attracted by said magnet, and is provided at a position where said parallel pin contacts with said inclined portion, said tip holder is exchanged without detaching said wheel tip. a circular opening which is formed in a holder of the holder joint; a magnet buried inside said circular opening; and a parallel pin perpendicular to the central axis of said holder joint; and said tip holder is inserted into said circular opening of said holder joint and attracted by said magnet, and is provided at a position where said parallel pin contacts with said inclined portion, said tip holder is exchanged without detaching said wheel tip. a magnet buried inside said circular opening; and a parallel pin perpendicular to the central axis of said holder joint; and said tip holder is inserted into said circular opening of said holder joint and attracted by said magnet, and is provided at a position where said parallel pin contacts with said inclined portion, said tip holder is exchanged without detaching said wheel tip.