{"aspect_id":"AS148","aspect_name":"thermal-resistance","aspect_reference":"https://doi.org/10.1351/goldbook.T06308","aspect_symbol":"R","name":"thermal-resistance degree Fahrenheit hour per British thermal unit (IT)","scale_id":"SC996","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":"R \u00b0F.h.Btu_{IT}-1","unit_id":"UN1037","unit_name":"degree Fahrenheit hour per British thermal unit (IT)","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.Btu_{IT}-1"}