Here an article
http://www.madeirablog.eu/2011/02/16/braguinha-de-madeira/
Madeira
This is from Atlas of stringed instruments.
There seems to be related instruments to these instruments.
http://www.atlasofpluckedinstruments.com/europe.htm
braguinha
example : custom made by Oficina Carlos Jorge,
bought via internet from Madeira-in-a-box, 2010
L=510 B=185 H=50mm
scale 335mm
You Tube
braguinha
On the Portuguese island of Madeira (just north of the Canary islands, more towards Portugal) they use three typical plucked instruments, that differ from the mainland Portuguese instruments. Note especially that the extra strip bridge is not used on the Madeira instruments.
The smallest of the three guitar-like instruments is a type of cavaquinho, with the name braguinha (or braguinã) - in fact "little braga" (see viola de braga). It is also called machete, or machete de braga. It seems to have arrived on the island from Portugal in 1854 and was taken to Hawaii in 1879, where it became the ukulele (but with the tuning of the rajão - see under).
The construction of a braguinha is like a tiny guitar, with a flat back and 4 metal strings. The tuning head can be flat with friction pegs from the back, or open like a guitar, with tuning machines. Sometimes the top half of the front is covered with different wood, like a scratchplate, but often it looks like a small rajão, so also with a raised fingerboard. The guitar-like bridge is glued to the front.
The tuning of the 4 metal strings is d' g' b' d'' (the 5-string banjo tuning).
The braguinha is played by strumming chords, to accompany folk singing.
Abrigado for the YT link! That sounded very nice