On a special level of their own in that arena are the Boldport kits from [Saar Drimer], superlative objets d’art that are ... but two of them as for a guitar tuner project.

Tuning a guitar is one of the most important skills ... Press the 5th fret of the A string and match it to the open D string (4th string). Press the 5th fret of the D string and match it to ...