{"aspect_id":"AS42","aspect_name":"surface-mass-density","aspect_reference":null,"aspect_symbol":null,"name":"surface-mass-density ounce (avoirdupois) per square foot","scale_id":"SC1086","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":"None oz.ft-2","unit_id":"UN1127","unit_name":"ounce (avoirdupois) per square foot","unit_reference":null,"unit_symbol":"oz.ft-2"}