This is industrial grade equipment. My first idea was to buy battery-operated Bosch or Leica laser level and simply attach it to wall on a mount. But one problem is operating temperature. These devices are not designed for permanent outdoor installation. I wanted the device to work reliably at temperatures below -10C. The laster I've got is warranted to work up to -15C. Second problem is UK climate. This device is dust and water protected. 100% waterproof.
I think about this in cost avoidance terms. Fixing car properly if I dent, say, a wing and a door will cost £1500-£2000 easily. And I use garage every day.