• 1-2-3 block
• 1-2-3 blocks

1-2-3 block (suomeksi)

Määritelmät:

• A tool used in machining fields, especially milling machine, milling, to aid in setup. It is a block of steel that is precisely squareVerb, squared and parallel whose sides are 1, 2, and 3 inches long, respectively. Similar, larger blocks are called ''2-4-6 blocks''.