Areameter (Acremeter) Introduction The Fenlectron Areameter (Acremeter) is a simple low-cost unit for measuring area worked in an agricultural or industrial environment. It can be calibrated to measure in acres or hectares. It is supplied with a universal fitting kit, complete with all necessary cables and sensors. It is particularly easy to fit, as it is powered by its own internal battery. For a full list of features click here. If you are uncertain what an Areameter is or does, try the Areameter FAQ.