| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to recognize the color of a colored lead in use only by viewing a pencil eraser by a method wherein the colored lead and the pencil eraser are made of materials having colors nearly equal to each other. SOLUTION: A crown 12 and a clip 13 are made of a transparent synthetic resin. The smaller diametral part 12A of the crown 12 is inserted in the rear end of a shaft tube 8 so as to fit the projecting part 12C of the crown to the key groove 8C of the shaft tube 8. By further inserting the smaller diametral part 12A of the crown 12, the projection 12B of the crown 12 fits in the engaging window 8D of the shaft tube 8, resulting in fixing the crown 12 to the shaft tube 8. In addition, the front inner hole 14A of a pencil eraser support 14, which is inserted from the rear end of the shaft tube 8, is fitted to the rear part of a lead tank 2. The pencil eraser support 14 is made of a transparent synthetic resin. Into the rear part inner hole 14B of the support 14, a pencil eraser 6 having a color nearly equal to the color of a colored lead 7 is mounted. To the rear part outside 14C of the pencil eraser support 14, a transparent synthetic resin knob 15 for covering the pencil eraser 6 is fitted so as to allow to view the pencil eraser 6 from the outside of the knob 15.
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