ASTM F1592 is a Standard Test Method for Detention Hollow Metal Vision Systems (spy holes in prison doors). This standard was created by the American Society for Testing and Materials, ASTM International, which was founded in 1898 as an international standard developing organization that publishes standards for a wide range of materials, products, systems, and services. This standard was published by ASTM F33, which is a committee that specializes in developing standards for detention and correctional facilities. F33 has published 14 standards in this area.