When did tool 3 inventory appear?

There will be a list after the work is completed.

If any tools and equipment are found incomplete or lost in the process of "three counts", it must be reported to the workshop supervisor immediately.

Tool 3 Inventory: the inventory at the time of tool retrieval. Do the math when you transfer your work place. When returning tools after work, count the number of valid tools registered when borrowing tools from the tool room. Most crew members follow the principle of "three numbers of tools": before borrowing tools, the number of borrowed tools must be counted first, and the number of borrowed tools must be consistent when they are used later and returned after work.