Astm E125 Reference Photographs.pdf !!link!! -

Do not guess. Do not assume. Compare to the standard.

It is critical to understand that distributing the without a license from ASTM International is a copyright violation. The PDF is copyrighted material. You must purchase the standard directly from ASTM (www.astm.org) or through authorized resellers (like IHS or Techstreet). Astm E125 Reference Photographs.pdf

You need a variable-intensity light source. The reference photographs in the PDF were taken under "white light" at approximately 100 foot-candles (1075 lux). Replicate this lighting. Do not guess

This category relates to the surface finish quality resulting from the finishing process (such as grinding or torch cutting) rather than a casting defect per se. It sets the standard for what constitutes an acceptable workmanship finish. Astm E125 Reference Photographs.pdf