The bağlama (saz) is tuned by düzen. The site includes 19 common tunings, lets you shift the tuning by semitones, and shows a 23-fret fretboard in the Turkish system, with unequal frets, so the quarter tones are marked on the frets themselves.
Note: a regular flat (like E♭) is a semitone, so it is blue. Only a half-flat (↓, e.g. E↓ or B↓) is a quarter tone, shown in yellow. Each quarter tone is drawn inside the fret box above it, and if that box also holds a regular note, both are shown side by side. Play it by bending the string or on a fretless guitar.
All maqamat and scales are available on the selected instrument in the fretboard above.