The number could refer to:
The manual described the use of the "Divisore Universale." By following the tables in the book, Lorenzo calculated the exact turns of the crank needed. He realized that the "divisore systematic" method mentioned in his notes was actually the technique (divisore semplice), which uses a hole plate to achieve fractional turns. The number could refer to: The manual described
: Impianti di riscaldamento, condizionamento e antincendio. condizionamento e antincendio.