| 摘要 |
A crown molding miter gauge has first and second straight edges extending oppositely tangent from circular members wherein one of the circular members includes a Cartesian reference chart reconfigured as a concentric circular chart, fixed with respect to the first straight edge, and the second straight edge is concentrically rotatable, so that the first and second straight edges may be conformed to a wall corner wherein the second straight edge acts as the horizontal reference of the reconfigured Cartesian chart and an indicator, fixed with respect to the second straight edge, acts as the vertical reference of the reconfigured Cartesian chart.
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