These levers are a great low-cost, light weight lever. They are amazingly easy to install and there is ONLY ONE SIZE. That's right - one size lever fits every string!
Please note: You will need 3/4 inch clearance between the guide pin and the bottom edge of the harp neck to install these levers. Currently Jordan levers may be installed on all Musicmaker's Harps with one exception - Jordan levers cannot be installed on the top 2 strings of the Studio Harp.
Sharping levers are used on folk harps to facilitate key changes. Installing a lever over a string allows you to raise the pitch of that string one-half step by engaging the cam handle against the string. Thus an F-string can be raised to F# by a simple flick of the lever. Similarly, a B-string may be tuned to Bb so that the lever will raise it to a B-natural and release it back to a B-flat, as needed
Most folk harp players set the key signature (sharps or flats) on the harp before starting each piece of music. For the key of G, you would engage the levers on all the F strings to produce the F# needed for that key (making sure all other notes on the harp are natural). If the following piece were then to be played in the key of F, you would then release the levers on all the F strings to produce F-natural, and also release all the B-string levers to produce Bb.
You may install a lever over every string on the harp, but if you think you may never use all of them, it would be more cost-effective to select which keys you think you are most likely to use, and then install only the levers necessary for those keys:
KEY OF G: requires F#
KEY OF D: requires F# and C#
KEY OF A: requires F# and C# and G#
KEY OF F: requires Bb
KEY OF Bb: requires Bb and Eb
KEY OF Eb: requires Bb and Eb and Ab
Super SUPER great instructions. I was worried that them being all-plastic might deaden the sound, but it doesn't! The few dollars in price difference really adds up when I'm putting them on 29 strings. I've only got four at the moment, but I'm going to keep adding them to my Smartwood harp as I go. Installing them is precise, but it's not difficult, and the instructions are great. They also came with extra screws, which is really, really nice! Always impressed!