The Examination of Disc and Pin Tumbler Locks for Tool ... - Library

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PLUMTREE ON TOOL MARKS MADE BY LOCK PICKS 665 FIG. 11--1lco disc tumbler from a lock cylinder that had been picked with a bounce pick. Disc width is 4.85 mm (0.191 in.) and thickness is 0.73 mm (0.028 in.).
666 JOURNAL OF FORENSIC SCIENCES FIG. 12--Corbin ball bearing Jrom a lock cylinder that had been operated with the key. Ball diameter is 2. 79 mm (0.110 in.). FIG. 13--Corbin ball bearing from a lock cylinder that had been picked using a bounce pick. 3all diameter is 2. 79 mm (0.110 in.). References [1] Tobias, M. W., Locks, Safes and Security, Thomas, Springfield, I11., 1971, pp. 130-158. [2] Busch, A. G. and Singer, M. L., Methods of Obtaining Locked Evidence, Ninth Naval Intel- ligence Office, U.S. Navy, Washington, D.C., pp. 2-15. [3] Davis, J. E., An Introduction to Tool Marks, Firearms and the Striagraph, Thomas, Spring- field, Ill., 1958, pp. 3-67.
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The Examination of Disc and Pin Tumbler Locks for Tool ... - Library

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