The speculum is a stainless steel or plastic device that resembles a … Another plus of the stereomicroscope is the natural, comfortable feel of the instrument that results from being able to use both eyes for viewing. Transmitted light is simply light from behind a document. Next, the doctor will insert an instrument known as a speculum into the vagina. Here is the most commonly-used equipment. For the first image, a photograph of the original document (the original was on file in the courthouse and could not be removed from that location) was scanned in and cropped to the area in question. MAGNIFICATION - Magnifiers/Microscopes. “Snooper” … Handheld magnifiers (sold here by QDEWill) enlarge the material from 2 to 10 times (magnification powers of 2X to 10X) and may have lighting abilities as well to brighten the field of view. It might seem that the more powerful the microscope in terms of magnification, the better, but for the task of handwriting examination, this is not the case. Digital microscopes combine optics for magnification with digital capture technology to allow the user to view the magnified image on the monitor instead of or in addition to viewing it through the microscope eyepieces. This equipment is used for non-destructive analysis of questioned documents in the presence of seemingly equal but physically different features of writing. This basic article on the use of the microscope in questioned document work is to form a portion of the educational and training program of the American Society of Questioned Document Examiners.-ErToR. The writing instrument that dominated for the longest period in history (over one-thousand years) was the quill pen . The Anatomy and Function of the Retina. With high quality instrumentation comes quick and accurate results. Document examiners use a wide range of magnification equipment. A complete eye exam involves the use of many pieces of equipment and several instruments. Another instrument of value in resolving cases is an instrument designed to recover indented writing. A type of microscope that is particularly useful in document examination is the comparison microscope. A binocular, or stereo, microscope is comfortable to use because, as the name implies, there are 2 eyepieces and the viewer focuses with both eyes. A sophisticated instrument using infrared filters and ultraviolet light is used by forensic document examiners for such examinations. The Optics, Refraction, and Instruments exam is frequently taken early in residency training. Forensic Document Examination enlightens forensic document examiners, forensic investigators, attorneys and others using the services of forensic document examiners with the basic principles and current trends in the area. Most handwriting examination is done at powers of 10X to 50X (the subject is enlarged 10 to 50 times). Infrared imaging equipment and infrared photography have opened up a new world for the questioned document examiner, although the concept is not new. Of course the computer is an essential aid to anyone who writes reports, runs a business, and handles finances. This document provides information to teachers in schools about: • using syllabus objectives and standards descriptors to design assessment instruments, tasks and items • developing assessment design processes . Photography using specific films and filters can be used in conjunction with these special lights to reveal and record information. Just as the examiner once had to divert from the study of handwriting to learn about a new machine, the typewriter, now he must learn about the computer and the output devices that are associated with it. Nov 16, 2016 - I utilize a variety of laboratory instruments in my work. THE FIELD OF FORENSIC DOCUMENT EXAMINATION instruments, travel documents, licenses, and various personal credentials and identification documents) 3.
2020 instruments used in document examination