Visibility Zero Unless You Lend Your Binoculars To The Navy 6 X 30 Or 7 X 50 Zeiss Or Bausch And Lomb : Pack Carefully And Send To Navy Observatory, Washington, D.c.

Visibility Zero Unless You Lend Your Binoculars To The Navy 6 X 30 Or 7 X 50 Zeiss Or Bausch And Lomb : Pack Carefully And Send To Navy Observatory, Washington, D.c. illustration from Clker.com (CC0-1.0 public domain — free to use).

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Clker.com (CC0-1.0)

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CC0-1.0

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