Metal detector testing must use test pieces containing a metal sphere of known, risk-based diameter, marked with size and type, separate pieces for ferrous, stainless steel and non-ferrous metal unless a foil container justifies ferrous only, tests proving detection and rejection under normal conditions, successive test packs at typical line speed and checks of failsafe systems.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.