Equipment
The Giles Document Laboratory is one of the best equipped for forensic document examination. Video spectral comparison and high energy lighting sources are used to distinguish inks by exploiting their different absorption and fluorescence properties. When coupled with a digital image capture technique, it is possible not only to visualise details on documents which cannot be seen by the unaided eye, but also to prepare images for later use in reports and statements.
Raman Spectroscopy, though a new technique in the area of Forensic Document Examination, is proving to be a helpful tool to discriminate differences in inks on paper produced by pens and printers. It is also showing promise with photocopy and laser toner deposits on documents.
Electrostatic detection apparatus (ESDA) is used to detect invisible impressions left on a document as a result of writing on another document overlaying it. Stereo-microscopy is used to study the fine detail of handwriting and documents. Specially developed comparison equipment is used to study fonts, spacing, alignments and characteristic wear and damage patterns from typewriters and modern office printers. Computer and Internet access to internationally maintained databases gives The Laboratory a diverse range of reference information and scientific background to support individual casework.



The Giles Document Laboratory