This book accounts for a study undertaken to design a Hydrostatic Weighing (HSW) equipment for the purpose of measuring body adiposity. The HSW equipment was constructed using a 2000 litre capacity water tank, a suspended weighing scale and small metallic chair. The validity and reliability of the HSW equipment was established. The HSW equipment is recommended as a low- cost, user-friendly and valid method of body adiposity assessment for clinical and research purposes.