Came here to say.  Also, I find it hard to believe that a manual slider scale thing was soooooooo accurate/sensitive that it totally called the difference between 299.5 and 300. Our pediatrician uses a manual scale, and based on pre- and post- measurements with our digital scale at home, we've found it to be off by a half pound in either direction..... the difference being that their scale tops out at like 25 lbs. So, yeah, I'mma call bullshit on a 300+ lb scale that will tell you you're at 299.5 lbs instead of 300. (edit: make words more better sense)