This Pin-Jointed Truss Experiment Unit allows users to explore force distribution and deflections in four common truss frameworks. The system features interchangeable square-section members, enabling easy construction of different truss configurations. The unit incorporates strain gauges on key structural members, linked to a strain gauge amplifier, providing accurate force measurement. Users can apply various loads using a load cell, observing deformation and stress responses in different structural designs. The system simplifies real-world structural concepts, making it ideal for understanding engineering principles such as force analysis and deflection behavior. With full integration into EDAQ software, the experiment setup allows real-time data collection and graphical representation of results. Students can explore fundamental engineering concepts such as Bow's Notation, force analysis using the method of joints and sections, and strain-energy-based deflection calculations. Additional applications include studying wind loads on a roof truss and the effects of swaying loads on a cantilever truss. The package includes a strain gauge amplifier, pinned and roller supports, a trammel arm with a high-resolution digital indicator, square-section frame members, joint bosses, a load cell, storage trays, and essential tools