Today in class we used a virtual comparison microscope program to compare the firing pin impressions of firearms on shell casings. The website:  www.firearmsid.com The classroom login key: C10255FS2016 Students were to complete test 1 & 2 in the cartridge casing activities.  (Scroll all the way to the bottom.  Read the directions on the site … Continue reading Online Comparison Microscope–Firearms ID