Comparison Microscope (IMAGE)

National Institute of Standards and Technology (NIST)

Comparison Microscope

Caption

Wilmer Souder, a physicist and early forensic scientist at the National Bureau of Standards, now NIST, compares two bullets using a comparison microscope. Souder learned forensic techniques from Calvin Goddard, another early scientist in the field.

Credit

NBS/NIST; source: NARA

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