1-2-3 block
1-2-3 block noun: 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.

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. May contain arranged holes. Similar, larger blocks are called 2-4-6 blocks.
- Synonyms:
- setup block, machinist block
Synonyms of 1-2-3 block
Forms of 1-2-3 block
| plural | 1-2-3 blocks |
|---|
Questions about 1-2-3 block
- What does 1-2-3 block mean?
- 1-2-3 block means 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.
- What part of speech is 1-2-3 block?
- 1-2-3 block is a noun.
- What is the plural of 1-2-3 block?
- The plural of 1-2-3 block is 1-2-3 blocks.
Words near 1-2-3 block in the dictionary
Source and license
Adapted from Wiktionary: 1-2-3 block (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “1-2-3 block.” Word.ws, https://word.ws/1-2-3_block. Based on Wiktionary, CC BY-SA 4.0.
