3-D Sphere


From the Navy caption of this 1944 photograph at Celestial Navigation:

Hilda Olson, Sp (T) 2c; Doris Propst, Sp (T) 2c and Joanna Bailey, SP (T) 2c, are given celestial theory instruction with the three-dimensial celestial sphere demonstrator by instructor Robert K. Rice AMM2c.

The photograph comes from the National Archives.

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