BOWED DULCIMER/VIOL
This is my own design of a bowed dulcimer based on the medieval fiddle or viol. It has four strings tuned similar to the viola -- CGDA -- an octave higher than the cello. It is also tunable to DADA. The scale is 19.5"-- shorter than a standard bowed dulcimer. 
Watch minstrel Jay Michaels play this particular viol below.