Russian guitar usually differs from the wood in the rest of the neck. The neck joint or heel is the point at which the neck is attached to the body of the guitar. The fingerboard is made of hardwood (ebony or rosewood are common), fitted with metal frets of brass or steel. Fret spacing almost always follows the western twelve tone equal temperament (12-tet) system. The surface of the fingerboard may be flat or curved slightly ("radiused"), although the curve on the Russian guitar is usually somewhat less than that of an equivalent western 6-string guitar. Inlayed position markers are common, and
Tenor guitar Freeman to have a better six string guitar sonority for rhythm guitar work than the normal tenor guitar with its very high A string. However, it was still tuned CGDA so that it could still be played by tenor banjoists. The Eddie Freeman Special was based on a six string model and it had a larger six string body and a six string scale length of 25.25 inches, rather than the tenor's smaller body and normal 23 inch scale length. The CGDA tuning used was re-entrant with the C and D tuned in the same octave and the G and