Thickness measurement equipment for stud/spike outsole at bending area Resolution : accuracy +/-0.01mm Different geometry of the contact faces of the measurement tips, ie.spherical, circular, rectangular or sharp edges are accpetable. Spherical tip faces shall have a radius of ≥50mm. Flat tips are recommended. The face diameter of circular measuring tips shall be between1.5-6.4mm; Rectangular faces of measuring tips shall have a long side of 4-6.4mm in length.