10 strings 4 courses.
Tuned as a ukulele : Gg cCc eEe aa (G3 G4 • C4 C3 C4 • E4 E3 E4 • A3 A3 ) or one note higher Aa dDd f#F#f# bb (A3 A4 • D4 D3 D4 • F#4 F#3 F#4 • B3 B3 )
As a guitar : Dd gGg bBb ee (D2 D3 • G3 G2 G3 • B3 B2 B3 • E4 E4 )
All strings are unwound except for strings 4, 7, and 10, which are bronze wound.
You can find dedicated tiple strings sets from GHS or LaBella
You can also use acoustic guitar strings,
string gauges (from an UMGF paulkris post ) :
