Our stackable Crime Scene Evidence Cut-Out Photo Markers are packed with features. Not only do they allow you to mark evidence, but they also provide a useful L-shaped metric reference scale which allows for the quick documentation of size. Each marker is also pre-drilled with a center hole which allows the markers to be staked into the ground. Each marker measures 3" x 3" with a 1.75" cutout. Each set is available in bright yellow and in 20-digit number ranges from 1-100 and alphabetical ranges from A-Z.