Historical information

Used by State Rivers and Water Supply Commission prior to their privatisation about 1990.

Physical description

A clear tube with sand inside - similar to an egg timer. Used to measure the accuracy of water wheels over a half minute or less. Measurements marked on outside and related to one revolution. The blue scales relate to small meter outlets(wheels), yellow scales related to large meter outlets(wheels).

Inscriptions & markings

Figures of rates relating to measurement of water in one revolution.