Check the accessories. Unless you have purchased the instrument only, your violin outfit should come with a violin with four strings, a bow, and a carrying case and most of the time a chin rest and rosin for your bow.[2] In most cases, the person who sells you the violin will be happy to string it for you, which has the added bonus of double-checking to be sure the tuning pegs (the knobs at the scroll, or top, of the violin) are properly fit to the scroll.