The drawing below is from Gustave Eiffel's book describing the tower that bears his name. There are 53 of them in total.
XXIV. Diagram of the assembly - Crane
This descriptive plate is interesting because it shows how the tower was built, from an elevation point of view. in fact we see cranes progressing in the sky at the same time as the tower, and their systems of attachment to the structure. There are also explanations by text on this mode of assembly.
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