Assertion: trombone's bell | /r/HasProperty | 17.8 cm
Facets:
Source sentences:
text: This compares with modern tenor trombones, which commonly have bores 12.7 mm (0.50 in) to 13.9 mm (0.55 in) and bells 17.8 cm (7.0 in) to 21.6 cm (8.5 in).