NF-271 designed to measure Distance ,Area,Volume , Pythagorea measurement,which is mainly applied in indoor decoration and design, building construction.In these basic functions.For most practical usage ,NF-271 can meet almost regular scenario applications.With it's cost effective price and useful functions, Our NF-271 laser distance meter get many fans from all over the world. Noyafa always take customers' satisfactory as the top priority ,any problems you are always welcome to contact Spark via sale08@noyafa.com