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Archive image from page 22 of Development of a spherical acrylic. Development of a spherical acrylic plastic pressure hull for hydrospace application . developmentofsph00stac Year: 1970 padeye >. free-sliding fit between pin and opening in equatorial ring equatorial ring padeye .- acrylic plastic hull permanently attached support framework
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Photo credit: © Actep Burstov / Alamy / Afripics
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