| 摘要 |
PROBLEM TO BE SOLVED: To vary stepwise a height of a support position of a writing tool (making chalk) 16 at a writing tool housing part (chalk housing part) and to dispense with raising of a support pin every time taking out the writing tool 16. SOLUTION: The writing tool housing part 20 comprises an housing cylinder 21 vertically extending and housing the writing tool; and a support piece 22 vertically movably housed in the housing cylinder 21 and supporting the writing tool 16. On the housing cylinder 21, a support pin insertion hole 23 vertically extending and a plurality of support pin engagement holes 24a, 24b, etc. communicated with one side of the support pin insertion hole 23 and having different heights are formed. The support pin 26 projected to the outside through the support pin insertion hole 23 and the support pin engagement holes 24 is formed on the support piece. |
