{"aspect_id":"AS42","aspect_name":"surface-mass-density","aspect_reference":"https://si-digital-framework.org/quantities/SUDE","aspect_symbol":null,"name":"surface-mass-density pound per yard","scale_id":"SC1124","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN1165","unit_name":"pound per yard","unit_reference":"https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#P","unit_symbol":"lb.yd-1"}