Large WaterSkin
From WikiRaider
The Large WaterSkin is a pick-up in The Last Revelation, in the level Temple Of Horus. It's found in the first Scales Riddle room. The Large WaterSkin can be combined with the Small Waterskin for the Scales Riddle to get the right amounts of water.
It can carry 5 litres when full, but it can also carry 1 2, 3 or 4 litres or be empty.