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Underwater viewing device

Image Number 4 for United States Patent #5954558.

An underwater viewing device for use during ice fishing for permitting a user to see underwater through a hole in the ice. The device includes a viewing tube having open top and bottom ends. An annular resting flange is disposed around the viewing tube. An elastomeric O-ring is disposed around the viewing tube. The O-ring has a diameter sized such that the O-ring is held in tension on the viewing tube. The O-ring is positioned on the viewing tube between the top end of the viewing tube and the resting flange with the O-ring resting on the viewing tube such that the viewing flange is held in a relative position with respect to the resting flange.

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