The FIDDLE FRETTER was developed to help students learn the early stages of violin playing. This is a critical time when many "give up" this difficult instrument due to frustration when trying to achieve the correct notes on the fingerboard. It also helps musicians who may already play instruments like the guitar or mandolin and have already developed an ear for music. For those players it is disheartening to be continually making flat & sharp notes when playing violin.
And also of course for anyone unfortunate enough to be in earshot.
I was having another go at my brother's old fiddle today, and a shortcut to getting some kind of music out of it sounds very tempting.