Estimating Measurement Uncertainty in Device Test Due to ATE Calibration Variations

A game board can be easily operated by infants and a game can be enjoyably played therewith for a long time, comprising; an arbitrary number of sunk rooms 9 extending downward from arbitrary positions in the disk surface of a rotary disk 4 supported by a table board 1; cutout holes 11 12 bored in the side wall of each of the sunk rooms 9; engagement parts 13 14 formed in lower parts of hole edges each defining the cutout holes 11 12; receptacles 15 for receiving flight bodies 16, each fitted in the sunk rooms 9 with a spring 22 interposed so as to be able to rise/fall freely; interlock projections 19, 20 which each fit in the cutout holes 11, 12 of the sunk rooms 9 and engage with the engagement parts 13, 14; and a group of projections, being equipped on a bottom plate of the table board 1, each releasing the interlock projections 19, 20 from the engagement by each hitting against the interlock projections 19, 20 shifting together with the rotation of the rotary disk 4, caracterized in that a side wall part 7 is formed by bending downward a rim part of the rotary disk 4, a roller 26a rotating in contact with the side wall part 7 is equipped, a drive motor 24 for rotating the roller 26a is equipped, and a switch 30 for a power supply 29 is attached on the surface of the table board 1.\!