GelSight Inc. develops technology that precisely visualizes and measures the 3D topography of any surface, revealing microscopic structures that are difficult to see under ordinary circumstances. The mobile tool can be used on any surface, including metal or glass, due to GelSightâs elastomeric sensor. The firm's technology has applications in the aerospace sector. It has developed a portable and non-destructive technique to control surfaces of aerostructures, cowlings, engine fan blades, windshields and other surfaces