A board lengthened to a set limit without change of thickness
Opening fragment of the studies on transforming a board's dimensions
A short, unfinished note opening the systematic study of how a board (tavola) changes shape: here it lengthens to a given limit while keeping its thickness unchanged. Only a few lines of mirror-script sit at the top of the page, which is otherwise dominated by faint show-through from the table of problems on the facing leaf.
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A board lengthened while its thickness stays fixed
The board is imagined lengthening to a stated limit without any change in its thickness, introducing the proportional problems of how its remaining dimensions must then vary. The sentence breaks off unfinished.