The ingenious Wittner geared fine tuning Violin pegs. Kind to the scroll peg box tapered holes as no rotational stress is pout on the tapered holes as you tune in strings or change a string. You may need to find a luthier close to you to fit them.
These finetune pegs are a real godsend. They make tuning so much easier than friction pegs. If you're not confident in woodwork you will need to get a competent luthier to fit them.
Well worth it though as they are a brilliant solution to the age old problem of tuning for students.