Abstract: A template for measuring and scribing tread and riser lines for the construction of a stairway, or similar purposes, which comprises: a plate member defining first and second straight edges which, in turn, define a square corner. First and second movable stop means are respectively carried by the first and second straight edges. The second edge is defined by a separate portion of the plate member carried by it and movable along a path of travel parallel to the second edge. Fulcrum arm means are pivotally attached to both the separate portion and the rest of the plate member, so that pivoting of the fulcrum arm means moves the separate portion and second stop means to predetermined positions along the path of travel.