Water-raising machine: wheel, pump and square frame
Measures of the wheel, the water level, the pump and its framework
This leaf works out a water-raising machine in red chalk and pen. A pen note gives the wheel's diameter as four braccia and six and a half ounces, the height of the water as two and two-thirds braccia, and the pump (tromba) standing four braccia and a fraction out of the water. Red-chalk schemes add a spoked circle, a measured angle, and a square framework whose rods and scanduppo are dimensioned; further mechanical parts are sketched but left without text.
On this page
Wheel diameter, water height and pump
A pen note fixes the working measures: the wheel's diameter is four braccia and six and a half ounces, the height of the water is two and two-thirds braccia, and the pump stands four braccia and a fraction clear of the water.
Machine scheme with wheel
A red-chalk scheme lays out the machine and its wheel with a run of measures: two, two and a half braccia, half a braccio and two and a half.
Square framework and its rods
A square framework is lettered d f, o q, a c, p and e b. The rods of the scanduppo are measured: a p nine-twelfths of an ounce thick, a e one and a half ounces wide, p o two and two-twelfths ounces, and o q one and eleven-twelfths ounces.
Circle ringed with rays
A circle surrounded by rays is annotated that a half runs ten ounces long.
Measured angle a - b
A separate angle is set out, its side a - b measured at five ounces.