Abstract: Strand-like apparatus for measuring roll position, i.e., roll gap and/or roll alignment, is moved through a caster between roll faces of a series of oppositely spaced pairs of conveyor rolls which define either a straight or curved strand travel path. Apparatus includes carrier means having resiliently deformable parallel sensing surfaces with an elastomeric core, and plural lateral and plural diagonal inductive distance measuring means pivotally linked to the sensing surfaces for generating roll gap and alignment signals. These signals are recorded. Single and multiple harness means attach single and multiple measuring apparatus to a powered starter bar at one or more lateral strand axes, thereby to make lateral roll position measurements during multiple or single passes, respectively.