Round tuning fork. A=440Hz
K&M tuning fork A=440Hz, model 168/2. Rectangular steel
Chromatic tuner from Korg. Suitable for all instruments.
Round tuning fork. A=442Hz
Tuner and metronome - two in one!
KORG AW-3M Clip-on Tuner with metronome
Chromatic Yamaha tuner, model YT-250, with an 8 octave span
Chromatic Seiko tuner with analog needle that indicates intonation and calibration from A=410Hz to A=450Hz
Professional KORG tuner, model OT-120