Patent ID: 8100008

Claim:
A measuring cap, comprising: a) an inner threaded tube of a first vertical height having a closed upper surface and an opening at a bottom rim, b) an inclined annular surface extending downward a second vertical height from the bottom rim of said inner threaded cylinder, terminating at the first lower rim, c) a surrounding outer wall having an upper rim and second lower rim coupled to the first lower rim of the inclined annular surface in sealed connection thereto, and also having a third vertical height that is at least equal to the sum of the first and second vertical height to define an outer fluid containing vessel when the measuring cap is resting on the second lower rim, d) wherein the inner threaded cylinder and the inclined annular surface form an inner fluid containing vessel when the measuring and storage cap is resting on the upper rim wherein there is a hollow cavity between the inner threaded cylinder and the surrounding outer wall.