| 摘要 |
A T-square for wallboard having a knife-sharpening means mounted on the body of the T-square, allowing the user of the T-square to easily and efficiently sharpen a trimming knife while the T-square is held in operative position on the wallboard. The sharpener may be a simple slot in the T-square, or blades mounted in a "V" formation, or a sharpening stone. The body of the T-square is preferably coated in a fluorescent color coating.
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