{"aspect_id":"AS132","aspect_name":"thermal-resistivity","aspect_reference":"NIST SP-811","aspect_symbol":null,"name":"thermal-resistivity degree Fahrenheit hour square foot per British thermal unit (th) inch","scale_id":"SC1001","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN1042","unit_name":"degree Fahrenheit hour square foot per British thermal unit (th) inch","unit_reference":"https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#D","unit_symbol":"\u00b0F.h.ft2.(Btu_{th}.in)-1"}