(Received 25 July 1979; accepted 21 September 1979)
Published Online: April
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The Projectina universal comparison projector was used to compare and examine surface detail on typewritten documents, high-speed computer printouts, photocopies, fracture matches, and mechanically produced documents. The observations made by using the side-by-side prism or the superimposition mode optical block were photographically recorded. The Projectina magnifies and projects two items so that similarities or differences can be determined.
Document examiner, Florida Department of Law Enforcement, Tallahassee, Fla.
Stock #: JFS12143J