Lever harps often have sharping levers, this is used to change the pitch of the string a half step or to sharpen it. This allows the harp player to play in different keys.
The levers may either be made of Delrin, nickel-plated solid metal, brass, brass and coated with Teflon and gold-plated brass.
Here are the other parts of a non-pedal harp:
Tuning Pins - These are the number of pins that go all through the neck and is often colored black.
Bridge Pins - May either be in gold or silver and it is where the strings of the harp rests.
Neck - The length of the upper part of the harp that is curved. It is also referred to as the "harmonic curve".
Sharping Levers - Adjusting the levers raises the pitch of the string one half-step.
Pillar - Also called the column, it supports the frame of the harp.
Soundboard/Soundbox - The soundboard is located on the string-side of the harp. The soundbox is located at the back of the harp. The holes of the soundbox from which the tune comes out off is called "sound holes". Sound holes help amplify the notes produced by the harp.
Feet - The feet or legs of the harp enables it to stand on its own, allowing easier playing.
Strings - The strings of the non-pedal harp is similar to the positions of the keys on a piano. The red strings are for "C" and the black or blue strings are for "F". The strings that are not colored are for the other remaining notes. Strings are plucked or strung by the harp player to produce tunes.
Here's an illustration of a lever harp from Sylvia Woods' website.
