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摘要

For use in a scaffold structure having upright support members provided with spaced support elements and cross members for attachment to said support elements of said upright members, a puncheon unit comprising an outer member for attachment to one of said upright members and an inner member telescopically received in said outer member, said outer member having support elements for said cross members and said inner member having support elements for said cross members and transverse holes co-acting with locking means to lock said inner member relative to said outer member. A slidably mounted support collar having support elements for said cross members is provided on said inner member.