Plumtree W G
J Forensic Sci. 1975 Oct;20(4):656-67.
Microscopic examination of the tumblers of pin and disc tumbler lock cylinders may indicate whether an attempt has been made to pick the lock. If an attempt has been made to pick the lock, it is often possible to determine what type of pick was used. Lock cylinders of five manufacturers, employing tumblers of several different compositions, were examined. The lock cylinders were picked with rake, hook, and bounce picks made of spring steel. The cylinders were disassembled and examined for pick marks. The location and appearance of the marks are discussed. Briefly mentioned are the effects of other types of picks and the effect of ball bearings in the pin wells. Photographs are included to show the pick and wear marks.
对弹子锁芯的锁栓进行显微镜检查，可能会显示出是否有人试图撬锁。如果有人试图撬锁，通常有可能确定使用了哪种类型的撬具。对五家制造商生产的、采用几种不同材质弹子的锁芯进行了检查。用弹簧钢制成的耙形撬具、钩形撬具和弹跳撬具对这些锁芯进行撬锁。将锁芯拆解并检查撬痕。讨论了撬痕的位置和外观。简要提及了其他类型撬具的影响以及弹子孔中滚珠轴承的影响。文中还配有照片，展示撬具和磨损痕迹。
