432 Hz ukulele tuning | Softer and more ambient sound - YouTube
Ukulele Tuner Pro - Where's Tiny Tim When You Need Him?
ukulele string tensions and scale lengths
Amazon.com: Snark ST8-HZ Chromatic Clip-on Tuner with Hertz Tuning - Works on All Instruments, Including Guitar, Bass, Mandolin, Banjo, Ukulele, Violin, Brass and Woodwind : Musical Instruments
Ukelele Tuner Using LabView and NI USB-6008 : 5 Steps - Instructables