Abstract: A roll of paper dimensioned to cover the surface of an associated medical examination table. Successive axial sections of the free end of the roll are elongated axially. Each axial section includes a plurality of indicia representative of units of length disposed on the paper at axially spaced locations on the axial section. The indicia are elongated laterally with respect to the axial section. In some embodiments the respective indicia are differentiated by length or color. The respective indicia may be disposed at axial intervals along substantially the entire axial extent of the entire roll. In some embodiments the respective indicia extend laterally across a substantial part of the lateral extent of the axial section.