A buckle pivotally arranged in a movable clamp 12 of a first tube holder 1 is attached with play to a buckle 120 pivotally arranged in a movable clamp 82 of a second tube holder 2. In large bets position numbers are unitary parts of exponents applied to the tokens; placing the 1 value token on any one of positions 0-9 indicates bets increasing unitarily exponentially, respectively, 20=1 unit-29 units, placing the 10 value token on 1-9 indicating bets increasing exponentially in value from 210=1000 unit-290 units, with token values being additive. In a second aspect, the invention consists of a five-point harness for a child’s safety seat, comprising at least one strap and at least one bracing member, the bracing member having a bracing surface for engagement with at least one strap, the bracing member being moveable along said strap to be co-operable with apertures in a seat to be secured releasably to said seat. From the foregoing, it will be apparent that the stereo projection optical system according to the present invention provides advantages in that its structure can be simplified with the reduction of its size by synthesizing lift and right image signals by displaying the stereoscopic image signal using a single projector. During the read operation, the control circuit is configured to apply a first voltage to a gate of at least one of the memory cells in a non-selected memory string not subject to the read operation, and apply a second voltage lower than the first voltage to a gate of another of the memory cells in the non-selected memory string not subject to the read operation. or lower; the ink can be jetted without purging from a printer maintained at a standby temperature of about 100\xb0 C.