Assertion: bighorn sheep's head | /r/Synonym | the d1measurement
Facets:
value: on crockett
type: LOCATION
value: on the boone
type: LOCATION
Source sentences:
text: The first mass measurement is always taken at the base of the horn where it meets the head, which is called the "D1" measurement on the Boone and Crockett (B&C) score sheet.