Relative length
·? (length: relative [Term not mentioned in available sources]); ·? (length: relative [Term not mentioned in available sources]); ·? (length: relative [Term not mentioned in available sources]).
Identical types: 4The actual (external) length of a drone, after "shortening", because its absolute length is too unpractical, as in Central European Bock types, the Gajda of Vojvodina (Serbia), Uilleann pipe(s), &c.; NB¹: ➺ Absolute length; NB²: ➺ Bridle.
Shortening methods are: bending (as in a trumpet), or the application of some type of visible or internal "S"-shaped "shortener" (as in a bassoon).