In 1887, at Newcastle-on-Tyne, a prize of 200 went to a compound portable agricultural engine, one of £loo to a simple portable agricultural engine, and lesser prizes to a weighing-machine for horses and cattle, a weighing-machine for sheep and pigs, potato-raisers and one-man-power cream separators.
The above example illustrates how Nicholson's or Fahrenheit's hydrometer may be employed as a weighing machine for small weights.
The automatic personal weighing machine found at most railway stations operates by means of a steelyard carrying a fixed weight on its long arm, the load on the platform being inferred from the position of the steelyard.
A crane machine of peculiar construction, well adapted for weigh - ing heavy loads, and extremely simple and compact, which does not properly come under any of the heads under which the machines have been classified, is the hydrostatic weighing machine.
Up to 2 lb the weight of the load is registered automatically on the chart in much the same manner as in the case of the automatic computing weighing machine already described.