Product Description Type MAB Mini Angle Beam (Aluminum or Steel) This Miniature Angle Beam Block is also known as a “Rompas” block or simply “Angle Beam,” and it is the ASTM and U.S. Air Force substitute for the DSC block for distance, beam index, refracted angle and sensitivity calibration. Contains a 1.0″ radius opposite a 2.0″ radius, and a 5/64″ diameter x .750″ deep flat-bottom hole. Dimensions: 1.000″ thick. (also available in .500″ thickness, see here) In accordance with ASTM E164 and U.S. Bureau of Public Roads, Type B specifications. Please specify Aluminum or Steel in comments field at checkout
