Tool settings

The statuses and conditions that together decide whether an instrument can be issued, plus types and categories.

Two lists, one question

Whether a tool can be issued is decided by two flags on two different records:

List	Flag	Says
Tool statuses	Available for booking	Whether it is free to be taken
Tool conditions	Blocks use	Whether it is safe to take

A tool can be Available by status and Damaged by condition. Only the pair answers the question, which is why the tool register leads with the answer rather than the two inputs.

Tool statuses

Where the tool is in its own life: available, issued, in maintenance, lost, retired. Set available for booking on the ones that mean it can be taken out.

Tool conditions

What state it is in: good, worn, damaged, out of service. Set blocks use on the ones that mean it must not be taken, whatever its status says.

Tool types and categories

What kind of tool it is, for grouping and for naming requirements on a maintenance plan — “a torque wrench” rather than a specific one, so any suitable instrument satisfies the requirement.

Calibration

Calibration is not configured here — the interval lives on each tool, because it is a property of the instrument rather than of a list.

What matters is that calibration is tracked separately from status and condition. An overdue instrument still works and still reads; its readings are simply no longer evidence. See tools.