Detecto Waist-High Stand-On Scale. Heavy-duty, yet lightweight. Engineered specifically for weighing obese and unsteady patients and features a 24″ square. Low-profile platform with non-skid surface and sturdy handrails with padded grips. Digital indicator with easy-to-use quick weigh keys, plus Body Mass Index calculation. Auto-zero function. Powered by either batteries or AC adapter. Auto-off function.