DescriptionTechnical description: Brass.
Sounding length: Effective crook lengths when fully inserted (i.e. counting length of female section but not male section) are 1478, 2017, 2406, 3039.
Bore: Bore diameter at male end: 10.9; bore is different at the two ends i.e. external slide diameter of male end (11.8mm) is larger than internal slide diameter of female end (11.3mm).
Smallest crook has no inscription, others are inscribed "D1", "C2", "B2" respectively. |