Fig 1Cuatro puertorriqueñoHover a part · click a course521 mm scale · 19 frets
Cuatro puertorriqueño860.4 mm long · 521 mm string · 10 strings in 5 coursesHover a part, or pick one below. Open the top to see the bracing inside.
Drawn to William Cumpiano's plan for the Proyecto del Cuatro Puertorriqueño (rev. 2011). Every number shown is the plan's: string length 517 mm plus 4 mm compensation, frets from its table, strings and gauges from its encordadura. Inside parts light up when the top is open.