A method and apparatus for measuring a surface using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus. A user uses the annotation options to select areas of the graphical element for annotation, to select highlighting and user input methods, to and provide comments. The first and second arms are both stored in storage positions. If the spin rotational acceleration speed is set low during a period moving from a dripping of the catalyst element solution process to a high velocity spin drying process in a catalyst element spin addition step, then it becomes clear that the non-uniformity of the amount of added catalyst element within the substrate is improved. An information user can extract highly reliable providers from the highly reliable provider database and can use or buy information provided by the extracted providers.