APPARATUS FOR MEASURING LIQUID VOLUMES

摘要

A liquid volume measuring apparatus has two parts. One part is a vessel into which the liquid to be measured is poured. The vessel is transparent or has a transparent part and a scale (the other part) is arranged outside the vessel so that it can be seen through the transparent vessel wall. There is an air gap between the scale and the vessel. While the vessel is empty and the vessel is viewed from above and inside, the scale can be seen through the transparent wall. However when the vessel is filled, those parts of the scale below the liquid level disappear because the light from these parts is totally internally reflected. The volume of liquid in the vessel can thus be observed from above the vessel.