Revealing mistake: The switch that Phones uses to turn off the television set is labelled "BRIGHTNESS".
Revealing mistake: The magazine that Phones is reading has blank pages inside.
Stingray (1964)
2 revealing mistakes in Tom Thumb Tempest
Starring: Lois Maxwell, Ray Barrett, Robert Easton, Don Mason
Visible crew/equipment: When Phones is unravelling the secret plans, a hand can be seen pulling him back to help unravel the plans.