Widely accepted format for bitemark photography. Get precise measurements every time in close-up crime scene shots with this photo ruler. This right angle rule is ideal for photographing handprints, footprints, tire tracks, etc. Of rigid vinyl plastic, marked with easy-to-see and photograph measurements on a glare-free finish. Overall size 105 mm x 105 mm. Available as 1 mm thick laminated plastic, vinyl magnetic or fluorescent scale.