... /O InterfaceRS-232C I/O interfaceGeometric MeasurementFunctionsBasic Measurement Functions: Point, line, angle, circle, distance, ellipse, rectangular, slot, intersection,Pattern measurement: pitch ... , midpoints between points, midpoints between line and point, perpendicularity, parallelism, polygon, point-circle tangent point, circle-circle tangent line, circle-point distance, midpoint between ...