| 摘要 |
PROBLEM TO BE SOLVED: To obtain a mark-card holder having high utility on taking in and out and writing down the mark-card for a hose race, a bicycle race, a motorboat race, and the like. SOLUTION: In a mark-card holder, shaft parts 3 are made symmetrically on lower parts of a mask plate 1 either side of a transparent square plate provided with a number of mark writing down holes, and shaft receiving holes 6 are formed to be fitted with the shaft parts 3 at the lower sides of the card- holding frame at either side of the card container 5 having card-holding frames at three sides of a bottom plate, both sides, and lower side. Also, projections 8 are provided on the card-holding frames at both sides for engaging the mask plate 1 in a closed state, and stoppers 7 are formed on the upside of the bottom plate of the card container 5 for preventing the mark-card from dropping off. As such, writing in the mark-card can be done promptly positively, and operability of taking in and out the mark-card can be accomplished excellently. |
