The Park Tool DS-1 isn't really all about weighing your bike. It can weight your bike, of course-it will weigh anything up to 55 lbs, but it's so accurate that it can weigh individual components down to 20 gram increments. That's where it really shines. You can weigh each part to build the ultimate lightweight ride. Its accuracy is rated to within 0. 005%. The DS-1 is designed to clamp into a bicycle work stand, or you can use the loop to hang it from the ceiling, a door frame, or anywhere else.