... workpiece. The various measurements of angle... Model 2301A surface profile tester allows the operator to check thecontour of workpiece. ... 25μm/20mm Horizontal resolution:1μm Measuring parameter:vertical/horizontal distance,included angle,arc radius,chamfer width,distance ... two selectable speeds,auto electrical positioning of pick-up Vertical adjusting height:240mm Measuring stand:granite base 400×600mm ...