| 摘要 |
This invention contemplates providing a number of sheets showing different building materials. Each different building material is illustrated in different scales on different sheets respectively. When a customer wishes to see the way his building would look with a particular building material on it, a photograph of his building is taken and one of said sheets, to the proper scale, is applied over the photograph. It would, however, overlie only that portion of the building which is to be covered by the new material. In that way the customer sees how his building will look with any or all various different materials placed over the outside of his building. When the building material, to be applied to an existing building, is available in different colors, a sheet representing the desired color may be placed between the photograph and the sheet representing the desired building material. One or more of the overlays, representing different building materials, may be placed upon different parts of a given building, to illustrate different possible designs.
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