Diameter tapes, also known as dendrometer tapes or tree tapes, are measuring tools used to determine the diameter of trees, logs, and other cylindrical objects. They consist of a flexible tape marked with a scale that is wrapped around the object, and a clip or hook that secures the tape in place. Diameter tapes are commonly used in forestry, arboriculture, and timber industries to estimate the volume and value of standing trees or cut logs. They can also be used to track tree growth over time, and to monitor the health and condition of trees. Some diameter tapes are equipped with digital readouts or other features to make measurements more accurate and efficient.