For violin tuning , use the pegs initially to bring the string close to the desired pitch and then use the fine tuners (if you have) for the desired pitch. In order to tune a violin, the A string is first tuned to a standard pitch (usually 440 Hz) using either a tuning fork or another instrument. You can also tune the violin to a fixed pitch instrument such as a piano. The other strings are tuned against each other in intervals of perfect fifth* (refer faq) by bowing them in pairs.
If all the 4 strings are way out of tone, each string should be tightened by 1-2 note increments on one string at a time and then tighten the next string. Tightening one string all the way to the desired pitch while leaving the other strings very loose may create unequal pressure on the bridge causing it to fall.
Here are all the four open strings tuned in the order for your referance
There are several electronic instruments such as the Korg CA30 Chromatic Tuner available in the market which makes tuning easier especially for beginners. Most violin tuners use LEDs to indicate the pitch and a large analog meter to show exactly how close the pitch is to ideal. Some tuners require you to specify the required pitch whereas some have the ability to detect the target pitch. Here are some of the leading tuners in the market.
