core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

unitText

Canonical URL: http://schema.org/unitText

Thing > Property > unitText

A string or text indicating the unit of measurement. Useful if you cannot provide a standard unit code for unitCode.

Usage: Between 10 and 100 domains
Values expected to be one of these types
Text
Used on these types
PropertyValue
QuantitativeValue
TypeAndQuantityNode
UnitPriceSpecification

Schema Version 3.3