Townsend, Middlesex County, Massachusetts, United States road map, satellite view, street view, terrain map, photos... Townsend, MA is situated at 42.67Â° North latitude, 71.71Â° West longitude and 91 meters elevation above the sea level.
Time of Flight. The simplest way to think about âtime of flightâ laser scanning is to look approach it as nothing more than a laser range finder. I think we all understand how a laser range finder works. It basically measures a distance by shooting a laser beam out to an object and measuring how long it takes that laser beam to bounce back.
Cost by technology. In the early days of laser vision correction, only one laser machine, the excimer laser, was used. Today, the most widely performed procedures, LASIK, requires two lasers â the femtosecond laser and the excimer laser. Then thereâs the latest procedure, SMILE, which uses one laser, the femtosecond laser.