Mechanical testing equipment for the determination of elasticity, adhesion and elongation of paint on sheet metal. The frame has a bending lever with a roller which pivots on a steel conical mandrel with a diameter from 3.2 to 38.1mm (0.12 to 1.5"). A graduation indicates the mandrel diameter in mm and inches.

This particularly robust and rigid construction provides excellent resistance to deformation and long service life. The specimen can be bent on part of or along the entire length of the mandrel, and the results (cracks) corresponding to different test diameters can be observed in a single operation.