Dipstick
Tells exactly how much is held: touch a vessel, a Gyre, the Crucible or a siphon. Sneaking, touch a siphon's arm to close it — or open it again.
kinditemcreative tabFluxion
Currents
Lattice3
Alloy3What the Loupe reads: 6 in all. The game works them out from its recipes. Wheel of Currents
In the Codex
Entry 
Valves, Narrows, Pumps and the Dipstick — Steer the distillate, decide who comes first, and lift it up.