Used to determine the modulus of rupture of center or third-point beams with a depth of 6" (150 mm). The upper heads load bearing blocks are easily changed for either a center or third-point testing configuration. Bottom support blocks are set in the lower support channel with a fixed 18" (457 mm) span length. Bearing blocks are spring-loaded to hold them in contact with the pivot balls and rod, as required by ASTM specifications.
