"The science of hydrostatics treats of the conditions of the equilibrium of liquids, and of the pressures which they exert, whether within their own mass or on the sides of the vessels in which they are contained" (Ganot 1890,86). The small collection of hydrostatic instruments in Maynooth consists chiefly of hydrometers.

207-9 Hydrometers
213 Sikes' Hydrometer
214 Stevenson Hydrometer
215 Set of Twaddell Hydrometers
216 Haldat Apparatus