摘要：

A simple, general-purpose measuring and locating device to assist in laying out construction projects is a full-scale sheet of dimensionally stable material, preferably polyethylene of suitable thickness, on which markings, preferably in a grid pattern, are impressed, printed, embossed, fused or similarly expressed on the sheet. The grid pattern is dimensioned to be most useful in laying out various types of projects without the necessity of measuring the location of each aspect of the project separately. In preferred embodiments, the grid is in one inch or one foot squares with a different color or line type to indicate sixteen inch centers to assist in determining the location of walls, studs, plumbing fixtures and the like.

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