Luke May and His Custom Microscope(s)

During his career, criminologist Luke S. May (1892-1965) handled hundreds of firearms cases. He also examined evidence in the form of hair, fibers, dust particles, tool marks, paint chips and on and on. All that meant he spent a lot of time peering through a microscope. For one firearms case in 1921, he sent the Police Chief in Aberdeen, Washington a preliminary report, but said, “I have been unable to complete my tests.”
Early microscope, ca 1920.
National Institutes of Health.
May explained so...