Reversible L-Shaped Reference Scales(Black White), Photo Evidence PVC Rulers, Crime Scene Forensic Supply, 5pcs/Pack (450 x 180 mm, Right Angle)

• Excellent for scientific photography in most lighting conditions
• Alternating black and white 1mm bars permit measurements to be taken under exposed photographs
• Circles with crosshairs are printed on each corner to assist in correcting parallax
• Forensic Crime Scene Investigation

L-Shaped Photograpic Scale is made of rigid plastic and designed for footwear and tire track impression comparisons in most lighting conditions. Two-sided comes with one side printed black on white, the other white on black. Circles with crosshairs are printed on each corner to assist in correcting parallax. OPTION: 450 x 180 mm Folding 450 x 180 mm Right Angle 300 x 150 mm Folding 300 x 150 mm Right Angle