We’ve all seen those fancypants brewing rigs with welded in sighting-tubes for gauging the volume of water or wort in the kettle, but what do you do if you can’t afford a fancy boil kettle, or don’t have the skills to fabricate such an elaborate volume-measuring device?
The answer is a lot simpler than you might think: Use a sanitised metal ruler!
Before you brew, fill your boil kettle up in small increments. Each time you add another litre of water (or whatever your unit of measurement is) – dip the ruler into the boil kettle and take a reading of the measurement. Then when you need to know how much liquid is in your kettle during brewing, simply dip the ruler in and check what volume was recorded at that measurement!
You could also do the same thing but using a wooden spoon – score a line for each litre and a thicker line for every 5 litres to make it easy to read.…