Assertion: mortar | /r/HasProperty | 914.4 mm
Facets:
Source sentences:
text: , Mallet's Mortar (36 inches; 914.4 mm; developed by Robert Mallet in 1857), and the "Little David" (36 inches; 914.4 mm; developed in the United States for use in World War II).
text: , Mallet's Mortar (36 inches; 914.4 mm; developed by Robert Mallet in 1857), and the "Little David" (36 inches; 914.4 mm; developed in the United States for use in World War II).