A split-field photo of two cartridge casings through the lens of firearm examiner Michael Haag’s comparison microscope. Haag said he determined the cartridge casing on the left, recovered as ...

A split-field photo of two bullets through the lens of firearm examiner Michael Haag's comparison microscope. After looking at the marks on the bullets, including the scratch-like lines, or ...

Melland, a BCA forensic scientist, says a comparison microscope is used to figure out the rest. "This one is our test specimen on the left, this would be our evidence specimen on the right and ...

Finally, comparison microscopes (Figure 4d) were often used in forensics, for example to compare fingerprints or bullets by eye before the advent of digital microscopy, which allowed images to be ...

The iPad’s Retina display goes under the microscope in screen comparison. Designer and developer Lukas Mathis put the new iPad’s Retina Display under the microscope to see just how good the ...

This article was originally published with the title “ A Comparison Microscope, The Mono-rail Sled, and more ” in Scientific American Magazine Vol. 108 No. 7 (February 1913), p. 158 doi:10. ...