A prop that can be used to perform an amazing mental effect. The performer can correctly guess the time set on the miniature clock by any member of the audience, even though the clock face is entirely covered by a sliding opaque cover. Measuring only 3.75" long, 2.25" wide, and 0.75" thick, this can be carried in your pocket ready for use any place, any time. Mechanical in working, and easy to do.
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