The principle of the siphon recorder is exactly the inverse of the mirror galvanometer.
The point of the siphon does not touch the paper, although it is very close.
She helped herself to soda water from a siphon on the sideboard.
The footman carried a tray with a bottle, glass, ice, and siphon.
The best trap for this purpose is the siphon or running trap.
Try that cane ...