Assertion: caliper | /r/HasProperty | measured at height
Facets:
value: above the soil level for trees
type: LOCATION
Source sentences:
text: Standards published by the American Nursery & Landscape Association specify that caliper should be measured at a height of 6 inches above the soil level for trees whose trunk diameter is 4 inches or less; if the trunk diameter is larger, caliper should be measured at 12 inches above the ground.