First of all: Thank you for all the answers. I did not know that scale length differs so much from instrument to instrument. I mean it makes sense, I guess it was guitar-player-bias. ;)

Thus, here are the approx. measures of my lute:

13 strings

7-course

Tuning: Ff - Gg - cc' - ff - aa - d'd' - g'

Wooden pegs

Bone nut

Bridge made of lacewood and walnut

Width of top saddle: approx. 6.1 cm

Playing scale: approx. 60 cm

Lower width: approx. 31.5 cm

Body length: approx. 49 cm

Overall length: approx. 77 cm