ASTM Compass provides full-text access to over 13,000 active ASTM (American Society of Testing Materials) standards, historical versions of standards dating back at least 20 years, and redlined version comparison between any two versions of standards. It also contains all ASTM journals, technical reports, monographs, and more. These resources cover a broad range of engineering disciplines including: aerospace, biomedical, chemical, civil, environmental, geological, health and safety, industrial, materials science, mechanical, nuclear, petroleum, soil science and solar engineering.