The ForensiGraph® is a ruler that also includes colour charts. When taking images of forensically important items (eg marks on a body), forensic scales are of great importance, to a) measure size accurately and b) to ensure that any change in colour in reproduction or copies is noted. Generally this has involved the use of both measurement scales and colour palette checkers. The ForensiGraph® allows both functions to be carried out simultaneously. Thus any images will contain accurate scales and colour reference checkers.