1. The Deflection of beam apparatus comes along with 4 panels of a PRATT steel truss, each panel of 40cm in horizontal direction and 30cm in vertical direction. Load can be easily weighed upon on each panel point.

2. All tension members are supplied with detachable springs so as to obtain appreciable deformation of the member. 

3. Direction of the diagonal members can be altered accordingly. Apparatus is designed to demonstrate visually the nature of forces set up in various members of the Truss.