The Benkelman Beam Apparatus is a precision instrument used to measure the deflection of flexible pavements under moving wheel loads. This bitumen testing equipment is essential for evaluating the structural performance and rebound deflection of asphalt and bituminous road surfaces. Designed as per ASTM D4694, ASTM D4695, and IRC:81-1997 standards, it provides accurate and repeatable measurements for pavement evaluation and maintenance planning.