Last Updated
：2025/11/23
1-2-3 block
Noun
Japanese Meaning
加工現場、特にフライス加工のセットアップ時に使用される工具。各辺がそれぞれ1インチ、2インチ、3インチの長さで、精密に直角に加工された鋼製のブロック（穴が配置されている場合もある）。
（ plural ）
Quizzes for review
A tool used in machining fields, especially milling, to aid in setup. It is a block of steel that is precisely squared and parallel whose sides are 1, 2, and 3 inches long, respectively. May contain arranged holes. Similar, larger blocks are called 2-4-6 blocks.
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1-2-3 block
I used a 1-2-3 block to align the vise before milling the workpiece.
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I used a 1-2-3 block to align the vise before milling the workpiece.
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