The standard version of our patent ID Tents includes a flat lower piece with an included metric scale, ideal for reference in scene photography. A hole at the tip of the base can be used to hang the scale from a vertical surface, and a hole through the center of the tent can be used to add additional visibility to the tent and anchor it to the ground with a crime scene flag. Standard ID Tents are available in both white and yellow, in your choice of numbers or letters.