The three brass-cased pocket gauges sat in a neat, orderly row on the zinc prep table. Their polished bezels reflected the emerald glow of the copper lantern above.
Each gauge was four inches in width, housed in a heavy, turned-brass casing three inches deep, fitted with a knurled zero-adjusting screw at the crown and a threaded three-quarter-inch bronze union at the base. Inside the thick beveled glass crystals, fine silver dials were divided into hundredths of an inch of liquid silver. It was marked with tiny, hand-engraved numerals: Northern Academy of Mines, Calibrated at Standard Horizon, Forty-Third Year of the Charter.
Len reached out with his sound right hand, his thumb touching the cool, smooth glass of the center gauge. The needle was floating cleanly at twenty-nine point four inches, steady as the bedrock beneath their boots.
“These aren’t town registry gauges,” Len observed, his eyes tracing the clean silver fine-tuning marks.
“These are clockwork bellows manometers,” Ivara Quill said, her single hand resting on the table beside them. “Built forty years ago by the instrument guilds of the high north. They run on sealed aneroid capsules and hardened steel hairsprings. There are no magical crystals inside these casings, no copper power-coil wires, and no system interfaces. Chancellor Morn can’t alter their fine-tuning by turning an office key in the central citadel. They tell only one thing: the physical weight of the air.”
