The HEDD1 explosive detection device is a premier Magneto Electrostatic Detection
Device, notes an article on the website.
Mr Row asked Dr Pritchard why she had not employed an electrostatic detection
advice - a handwriting analysis machine - to examine the signatures.
Mellinger has convinced the archives to subject the existing notes to electrostatic detection
analysis, which can capture indentations on paper.
A series of tests including handwriting, ultraviolet light and electrostatic detection
were carried out on the five documents.
Using specialized photography, microscopes, and an electrostatic detection
apparatus that can reveal where information has been obliterated, erasures were detected on the original.
He also conducted an indentation analysis of the court document using an electrostatic detection
device, which revealed the paper bore indentations "consistent with someone practicing the writing of a signature before actually simulating the signature.
Students employ a range of the latest chromatographic techniques to analyse unknown materials, use scanning electron microscopy to examine traces residues and electrostatic detection
apparatus to investigate document fraud.