| 摘要 |
A plurality of novel depth of cut scales are eccentrically inscribed on faces of circular cutting blades. The depth of cut marks on the scales are line segments that are easily lined up with the sole of a hand held circular saw, with the table of a table saw, or with the workpiece surface of a radial arm saw or a sliding miter saw. The accuracy of setting the depth of cut is greatly improved by the novel construct of the scales, which provides depth of cut index marks that are separated from each other by a distance larger than the difference between the indicated depths. The circular cutting blades with the novel depth of cut scales can be used in any cutting tool utilizing circular cutting blades without any modifications and without any additional external tools or instruments. The scales provided by present invention resolve to as small a distance as 1/32 of an inch on English units scales or to 0.5 mm on SI units scales. The resolution of scales so constructed increases as the diameter of the blade increases which is beneficial for table and radial arm saws using significantly larger blades than hand held saws.
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