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Register 01 · Naval tools and systems · space.
Twenty-four marks · the tools and systems under measurement · same construction · 200×200 · integer geometry · currentColor + brass-deep accent · 24 marks · one of the 17 registers on the Backstaff.
This register is one face of the Backstaff evidence system — the held instrument that holds the Astrolabe measurement engine, maps compliance controls, and engraves every evidence record into a register of record. The full reference library lives at /corpus; the alphabetical view at /corpus/glossary; the operator view at /corpus/switchboard.