An essential tool for clearly identifying physical evidence at a crime scene. Each marker has a bold 20mm scale, adding perspective and a point of reference to photographs. Each marker is 2.5cm x 3.5cm (1 x 1 3/8) with a non-glare matte finish. Ideal for use with Evi-Paq First Response Evidence Markers. Each Combo kit includes 50 sheets of letters and numbers as well as several pages of arrows and blank markers.