Suction pumps from Imola and lettered figures
A turned sheet: water-raising pump mechanisms 'from Imola' with geometric circle figures at left
A double-spread sheet drawn with the paper turned on its side, filled at the right with mechanical figures — trestle frames, cylinders and levers — keyed by long strings of letters. At the lower part a figure is captioned 'Pumps from Imola' with the measures 1½, 3 and 3½, identifying water-raising suction pumps. Two circles crossed by radiating tangent lines stand at the left as a geometric construction accompanying the machines.
On this page
Pumps from Imola
A figure in the lower part is annotated with the measures 1½, 3 and 3½ and captioned 'Pumps from Imola.' It records suction pumps (trombe) associated with the town of Imola for raising water.
Lettered mechanical figures across the upper half
The upper half, drawn with the sheet turned, carries a run of figures keyed by letters from a and g through long strings such as q x — L — h — K and K — c t b v a — r o p S. The letters index the parts of the machines sketched there.
Circles crossed by radiating tangent lines
At the left two circles are crossed by lines radiating out to points beyond them, a geometric construction set beside the mechanical studies.