EVI-PAQ ID Tent 1-20 (Cut Out Type) Each marker features two 7.6cm x 7.6cm (3" x 3") surfaces and a third horizontal surface featuring a distinctive 4.4cm ( The inclusion of a scale allows for perpendicular photo angle or wall photos Each scale includes a set of photo cross hairs to help correct parallax Each ID Tent features a centered hole for wall mounting or elevated field use Made of durable plastic and stackable for compact, easy storage