Assertion: tank | /r/HasAspect | maximum armor of 30 mm
Facets:
value: in 1939
type: TEMPORAL
Source sentences:
text: In 1939, most tanks had maximum armor of 30 mm (1.2 in) or less, with guns with no larger caliber than 37–47 mm.
text: In 1939, most tanks had maximum armour of 30 mm or less, with guns no heavier than 37–47 mm.