| 摘要 |
A screw gauge and indexed drill holder for use with sheet metal or wood screws has a base with a series of progressively smaller gauging holes into which a user can insert a screw of unknown gauge, the gauge of which is determined by the smallest hole into which the screw will fit. A series of holes sized to accept and hold body (clearance) drills of specific sizes is coordinated with the gauging holes such that once the gauge of a screw is determined, the proper body drill is referenced and immediately available. Another set of holes sized to accept and hold pilot drills of specific sizes may also be present and coordinated with the gauging holes to indicate and provide the proper pilot drill for a screw of a particular gauge. Indicia may be provided which shows the screw gauge corresponding to a particular gauging hole, the screw body diameter, the corresponding body drill size, and the corresponding pilot drill size. A set of drills may be provided with the device.
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