| 摘要 |
A precision cut saw guide base plate apparatus to be used on a portable hand held power circular saw for aiding in cross cutting a workpiece. A sliding system attached to the base plate of the saw includes a fence which is pivotably from a stored position on the upper saw side of the base plate to an operative position on the lower workpiece side of the base plate. The fence engages the workpiece during cross cutting and the base plate slides relative to the sliding system against the bias of a nearly constant force extension spring. A rubber shock bumper between the base plate and the sliding system absorbs shock when the spring returns the sliding system and the base plate to a retracted position.
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