TechGearLab

The Korg TM-60 is a fast and responsive guitar tuner that works with a variety of instruments and even vocals, making it perfect for ear training. The metronome feature can improve your timing, and will accommodate any time signature, too. For guitar players, this tuner's speed lets you work on your intonation while bending or playing slide, and it's also excellent for practicing non-fretted instruments like cello or violin. The TM-60 uses a built-in microphone to analyze sounds but also includes a clip-on microphone that senses vibration. When using the clip-on sensor, this tuner is lightning fast. 
For the working musician in dark or noisy settings, this model is not a good choice. It easily locks on to other loud tones in the room. While it has a line in for an electric guitar, there is no line out, so it can't be incorporated into an effects chain. The display is small, and while it's easy to read on a desk or music stand in front of you, it's hard to see while standing a few feet away. However, it's perfect for the practice setting and could be an excellent tool for students and music teachers.

The KORG TM-60 is a fast and responsive guitar tuner that works with a variety of instruments and even vocals, making it perfect for ear training. The metronome feature can improve your timing, and will accommodate any time signature, too. For guitar players, this tuner's speed lets you work on your intonation while bending or playing slide, and it's also excellent for practicing non-fretted instruments like cello or violin. The TM-60 uses a built-in microphone to analyze sounds but also includes a clip-on microphone that senses vibration. When using the clip-on sensor, this tuner is lightning fast. 
For the working musician in dark or noisy settings, this model is not a good choice. It easily locks on to other loud tones in the room. While it has a line in for an electric guitar, there is no line out, so it can't be incorporated into an effects chain. The display is small, and while it's easy to read on a desk or music stand in front of you, it's hard to see while standing a few feet away. However, it's perfect for the practice setting and could be an excellent tool for students and music teachers.

Tuner and Metronome Combo Comparison