| 摘要 |
PROBLEM TO BE SOLVED: To reduce fatigue associated with long time writing. SOLUTION: A delivery pencil 10 is constituted by including a main body tube 11 consisting of a front region 16 positioning on a penpoint part 12 side, a rear region 17 positioning on a push button part 14 side and an intermediate region 18 positioning between the front region 16 and the rear region 17. The intermediate region 18 is made to be constricted or to be diametrically made smaller than the outer diameters of the front region and of the rear region 17. Concretely, the intermediate region 18 has an outer diameter, which curvedly reduces so as to be connected respectively from the front end side of the intermediate region 18 connecting with the boundary position B1 on the front region 16 side and from the rear end side of the intermediate region 18 connecting with the boundary position B2 on the rear region 17 side to the middle of the intermediate region 18. |
