Lute Dulcimer
Instruments- discuss specific features, luthiers, instrument problems & questions
As Strumelia so graciously pointed out, that is not a dulcimer. It is a lute with a diatonic fret board. Seagull makes an instrument similar to the one in the video. At one time it was called a Merlin. Looking a Musicians Friend, I see they are called Seagull dulcimer. Do a search there and you will find several models. There is a used one for under $100. They should be easy to build. Michael J. King has a book, Stick Making Dulcimer Book, available on his website: michaeljking.com . He is in Great Britain. I think he also has plans you can download.
Ken
"The dulcimer sings a sweet song."