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Mortice Gauge
A mortise gauge is a woodworking tool used by a carpenter or joiner to scribe mortise and tenon joints on wood prior to cutting. Mortise gauges are commonly made of hardwood with brass fittings.〔
Like the simpler marking gauge, a mortise gauge has a locking thumb screw slide for adjusting the distance of the scribe from the edge of the wood. It has two protruding pins, often called "spurs",〔(The Mortise Gauge ). ''Technology Student''〕 which are designed to scribe parallel lines marking both sides of a mortise at the same time.〔(What is MORTISE GAUGE? definition of MORTISE GAUGE (Science Dictionary) ). ''The Science Dictionary''〕 One of the pins is adjustable, attached to a sliding fence, so that mortises of different widths can be marked.〔
Some mortise gauges are designed with one retractable spur, so that they can be used as marking gauges as well;〔(A Short Guide to Mortise and Marking Gauges ). ''Tools for Working Wood''〕 however, because the mortise gauge is an expensive and high precision tool, many carpenters prefer to have a separate marking gauge for general use.〔
For complex joints, some mortise gauges have a double-beam design which allows the gauge to be wrapped around a tool such as a chisel for extra accuracy.
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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