Go Deeper For parents & teachers
Within the BFOE franchise, a portable vent-monitoring instrument combining pressure, gas-flow, and temperature measurement. Real-world parallels include multi-gas analysers (MultiGAS, DOAS), pressure sensors installed at fumarole openings, and FTIR spectrometers that can characterise gas composition from a distance. Together these instruments produce the 'gas signature' that volcanologists read to infer what the magma system beneath is doing.
Appears In
The Burning Mountain Chapter 1 — When the Mountain Roared
"… in the wind. Nothing alarming. Nothing urgent. But when Monty planted the vent gauge and waited, the needle quivered farther than he liked before settling back."
The Burning Mountain Chapter 1 — When the Mountain Roared
"He had brought teaching crates up from the village that morning: a vent gauge, a thermal wand, a folded danger map, and a portable core drill …"
See Also