La rota a volta a man destra e b a sinistra e c pure a destra; e la rota grande m pure volta in contrario della rota a, perchè il polo di quadro torna in tondo; e 'l rocchetto b senza polo, e la rota m li ha impolati sopra uno de' sua bracc, e li mena intorno, cioè b c intorno a a, che si volta per contrario di b.
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The large wheel contains
three smaller ones.The
lerge one and the smaller
central one are pivoted at
the same point. The pin is
square for the width of the
smaller one and then
becomes round so that this
can turn in the opposit
direction to the large one.
The other two wheels are
pivoted on the face of the
large wheel and are thus
" led " around the central
one in an anti-clockwise
direction.
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