Ladder bracing and floating bridge for volume and clarity that belies its petite frame, a Tenor Guitar that will hold its own in the fray.
Based on an instrument produced by Regal in the 1930s, the short scale on Ruby makes it a very playable melody instrument, suiting converts from Mandolin and Tenor Banjo. The combination of relatively heavy stringing and ladder bracing give it a direct, full tone lacking in many larger X-braced instruments.
In the 1930s these would tune high at CGDA, but Rubys sound great down in GDAE. Plectrum Banjo type tunings (CGBD / DGBE) are also possible.
Rubys can come in your choice of tonewoods, but I recommend Mahogany for the body and neck, with Torrefied SItka Spruce for the top. The tuners are Planetary-geared banjo tuners.