Where many fountains have to be filled, and when regularity, accuracy and despatch are necessary, we should advise the use of a measuring cistern, a practical contrivance manufactured by the same firm.

Fig. 330 is a tin-lined wooden tank divided into water-tight compartments, which are filled with water admitted through the horizontal tube which is seen in front of the cistern. When the required amount of liquid has been admitted, the supply is automatically cut off by a float and valve. A graduated glass tube indicates the amount of water in each compartment. By means of the valves shown in the illustration the contents of the tanks may be discharged into the fountains, thus charging these with the proper amount.

Fig. 330. - Measuring Cistern.