1-2-3 block

English

1-2-3 block (plural 1-2-3 blocks)

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. Similar, larger blocks are called 2-4-6 blocks.

单词	1-2-3 block
释义	1-2-3 block English Noun 1-2-3 block (plural 1-2-3 blocks) 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. Similar, larger blocks are called 2-4-6 blocks.
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