| 摘要 |
A graduated, grooved rule and/or graduated slotted and grooved rule member for use in combination with the subcombination head means of combination tool. For example, the subcombination head means of a combination square, the subcombination head means of a bevel protractor; combination head means of a builder's combination tool, square; subcombination head means of a double square; subcombination head means of a reliable try square; subcombination head means of a die maker's square and the like.
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