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The LEV-3 guidance system consisted of two free gyroscopes (a horizontal and a vertical) for lateral stabilization, and a PIGA accelerometer to control engine cutoff at a specified velocity.
This year, Kimberly-Clark offered a "value priced" three-pack of Kleenex, gave store displays to retailers and offered a special mail-in promotion for a free gyroscope from Bill Nye, "The Science Guy," of PBS.