The search for is understandable. Budgets are tight, and one might think, "It's just a few photos."

While the full high-resolution ASTM E125 reference photographs are typically sold as proprietary adjunct charts ASTM International

ASTM E125 is a standard published by the American Society for Testing and Materials (ASTM) that provides reference radiographs for steel castings. The standard is titled "Reference Radiographs for Steel Castings" and is used as a guide for the radiographic examination of steel castings.

Internal chills, unfused chaplets, porosity, and welds. Plate IV: False indications and magnetic anomalies.