FIELD: measurement technology; stand tests. SUBSTANCE: movable measuring member is made in form of disk with cylindrical side surface and is designed for mounting in support plate. Side surface of disk can come in contact with outer surface of tire tread. Disk is secured on axle installed for angular and axial displacement relative to its support rigidly coupled with support plate and engaging with corresponding longitudinal and cross slip pickups. EFFECT: enlarged range of measurements owing to provision of simultaneous determination of considerable values of longitudinal and cross slipping of thread relative to support surface. 1 dwg
