For almost a century, we've been keeping the world's finest string instruments in tune. It started in the late 1800's when Grover first produced a few guitar and banjo machine heads, then expanded into additional production of tuners for bass guitar, pedal steel, mandolin, dulcimer, ukulele and violin.
In early 1997, ToneRite Inc launch their first commercial product known as ToneRite Signature. An engineer named Agapitus (Augi) purchased a new cello, he lacked the time of playing the musical instrument. With the help of his background knowledge of acoustical physics and engineering background, the first ToneRite was built.