This guideline gives general information on the rapeseed displacement method of measuring volume. Volume measurements can be performed for breads, cakes and most baked goods. The idea of displacement has been around since a human first sat in a tub of water. Similarly, baked product can be measured using rapeseed instead of water. Most volume apparatuses have some calibration scale (cubic centimeters, cubic inches, etc.) for quantifying the volume of baked products. This allows for independent and unbiased measurement of volume and discrimination between relatively small differences that might not be observed with other methods.