How to Buy a 3-D Laser Scanner

High-definition surveying (also known as laser scanning) is a non-intrusive way of rapidly collecting detailed and accurate three-dimensional as-built data without the need for closing lanes or endangering field personnel. There are a great number of laser scanning technologies currently available, and new innovations in hardware and software are reported each month. Since these 3-D laser scanning systems can cost over $100,000, surveyors or engineers should choose a system carefully. This article presents 10 criteria that should be considered when purchasing a 3-D laser scanner. These criteria include: work process, accuracy, dynamic range, device speed, field of view, operating environment, ease of use, eye safety, supplier stability and cost. Each purchaser needs to weigh these criteria according to their own market, the skill and experience of their personnel, and what systems are available and supported locally.