A.15.3:5.3 - Hardware-acceptance pseudo-slots rejected

A hardware acceptance method says to use a calibrated instrument, selected reference plane, calibration record or certificate, and threshold. That sentence describes a method; it declares no A.6.5 SlotSpecs. Keep those choices as ordinary A.15.2 plan content, each under the pattern that defines the plane, calibration or evidence reference, and threshold.

Open A.15.3 only when an A.6.1 declaration, a RelationSignature SlotSpec, or another declared member already defines both the position and its actual-use rule. Otherwise return missing-governor for typed reuse; do not wrap the method description or fixture card in a fictitious slot-bearing declaration. Measurement, evidence sufficiency, readiness, acceptance, and actual instrument use remain separate.