Shop Tips:
Marking Gauges Can be Used for More than Scribing Lines
The marking gauge, or gage, is a simple layout tool consisting of a beam with a small steel pin inserted near one end and a moveable fence, usually with a thumbscrew, than can be locked in position at any point along the beam. The pin on the business end of the beam is filed to a knife point to create a clean scribe line across the grain of a workpiece. An indispensible tool for laying out dovetails, pins, and tenons, the marking gauge can also be used for other purposes.
Old marking gauges can usually be found at flea markets for less than $15. It is often handy to have more than one if a project requires several different settings. While it is a convenient all-in-one tool, a combination marking/morticing gauge cannot be used for the applications described here.
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1. When fastening a table top to its base, I use the clean end of the beam to maintain a consistent overhang an all sides. Unlike a steel combination or double square, the well-worn edges of a wooden marking gauge assure that I don't mar the fresh finish of the table top or apron. |
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2. A marking gauge can also be used to transfer measurements directly from a workpiece to the table saw without fear of chipping fragile carbide. If you intend to use this method to set the saw fence, remember to account for blade thickness when necessary. |
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3. The all-metal wheel marking gauge can double as a depth gauge for larger (1/4") diameter holes and mortices. |