This Composite Wall Heat Transfer Trainer demonstrates conduction through multilayer materials. It enables measurement of thermal conductivity and temperature distribution across different layers. The setup includes heaters, thermocouples, and digital indicators for accurate observation. Students learn about heat conduction, insulation, and energy loss in wall structures. Suitable for engineering colleges, polytechnic institutes, and ITIs, this apparatus is durable, user-friendly, and provides a strong practical foundation in heat-transfer studies.