Part, §

1 Pre,  2|      vacuum that the weight, attached to the little beam, which
2 Exp    |      piston formed of a disk attached to a strong iron rod, which
3 Exp    |      or whatever load may be attached to the other end of the
4 Exp    |     A beam called the ladder attached by a chain to a quadrant
5 Exp    | which by means of the weight attached to the other end opens the
6 Exp    |  hook at the end to which is attached a fork carrying the pump-rods
7 Exp    |      end of this same rod is attached the piston-disk of the force
8   I,  3|    air; and as the piston is attached by a chain to one end of
9   I,  4|    20 skeppund respectively; attached to either end of a scale-beam,