Macrograph
{{Short description|Low magnification image}}
{{Hatnote|Compare macro photography.}}
A macrograph or photomacrograph is an image taken at a scale that is visible to the naked eye, as opposed to a micrographic image, taken with a microscope. It is sometimes defined more precisely as an image at a scale of less than ten times magnification.[http://www.engnetglobal.com/tips/glossary.aspx?word=Macrograph Macrograph] EngNet Engineering Dictionary
Materials science
This term is often applied to a three-dimensional image taken of a material using a low-power stereomicroscope. These images are used in materials science, particularly in the study of stress fractures in metals.[http://www.tec-eurolab.com/eng/metallographic-examinations.asp Metallographic examinations] {{webarchive|url=https://web.archive.org/web/20081011105131/http://www.tec-eurolab.com/eng/metallographic-examinations.asp |date=2008-10-11 }} TEC Eurolab, Accessed 12 May 2008{{cite journal | author = Milan, M.T. |author2=Spinelli, D. |author3=Bose Filho, W.W. |author4=Montezuma, M.F.V. |author5=Tita, V. | year = 2004 | title = Failure analysis of a SAE 4340 steel locking bolt | journal = Engineering Failure Analysis | volume = 11 | issue = 6 | pages = 915–924 | doi = 10.1016/j.engfailanal.2003.12.003}} This method can also be used to assay the fine structure of steel, in a standardized test called the Baumann method that creates a sulfur print showing the amount and distribution of sulfur inclusions through the metal structure.Arthur J. McEvily (2001) [https://books.google.com/books?id=qoEq8ZLhPJkC&q=macrographic&pg=PA90 Metal Failures: Mechanisms, Analysis, Prevention] Wiley-IEEE p 90 {{ISBN|0-471-41436-0}}