pump displacement for each stroke is in fact precisely adjustable and clearly indicated by the gauge means 51 in order to dispense a different volume of liquid per pump stroke it is only necessary to readjust the position of the gauge rod 53 one of the major advantages of the present invention is the physical configuration of same when the dispenser is not in use in this respect particular reference is made to fig4 wherein it will be seen that the pump plunger is depressed and the gauge rod 53 is also depressed into the cap structure so that the top of the cap is substantially planar the heights of the boss 17 and of the enlarged head 24 of the pump plunger are substantially the same as or less than the height of the upstanding wall 16 about the cap structure floor 12 the dispenser tube 44 extends outwardly of the cap structure below the top of the upstanding wall 16 additionally the locking means 62 is disposed below the top of the upstanding wall so that in effect the upper surface of the liquid dispenser of the present invention is substantially flat with only certain indentations therein this has the advantage of protecting the dispenser from inadvertent damage by contact with other elements that might ben or break portions of the dispenser and furthermore provides the capability of stacking liquid containers having the liquid dispenser hereof attached to the top thereof the low profile structure hereof is particularly advantageous in those applications wherein storage of containers with dispensing means thereon must be made in limited volume as in a refrigerator during shipping or the like although the present invention has been described with respect to a particular preferred embodiment thereof it will be appreciated by those skilled in.