Maestro's tuning fork

Maestro's Tuning Fork is a tool used by Maestro in The Devil's Chord.

Maestro's tuning fork
Type:	Tuning Fork
Place of origin:	Unknown
Made by:	Maestro
Used by:	Maestro
First appearance:	[[first appearance::The Devil's Chord|The Devi
Appearances:	The Devil's Chord

Maestro's tuning fork was used by Maestro in The Devil's Chord to locate the Doctor and Ruby Sunday when the Doctor used his sonic to cancel out all sounds.

Uses

Maestro uses their tuning fork when The Doctor emits a sonic sound using his sonic screwdriver to find him. They find him by putting the resonating tuning fork in a nearby puddle, drowning out and cancelling the sonic noise, making the Doctor and Ruby findable