Scale rulers are designed to facilitate the operations of transferring from one scale to another; measuring and setting off linear dimensions in a given scale, determining an unknown scale and performing other similar works.
A forensic scale ruler is used to record the dimensional values of individual objects, usually small in volume and area.
A useful property of a magnetic scale ruler is flexibility, unlike plastic or cardboard ones, and can repeat the curves of the surface, which is important for uneven surfaces. This property of a magnetic ruler is also important when carrying, it can be rolled up and be quite compact, unlike an iron sliding scale ruler.
A magnetic scale ruler 30 cm long is specially designed for carrying out expert actions in road accidents (RTA). The length of the ruler allows it to be fixed on a metal surface so that a significant part of the ruler goes onto the plastic surface (bumper, threshold) and the expert can easily carry out photo recording.
The forensic scale ruler meets all the necessary requirements of the investigative bodies of Russia.