Detecto apex-sh digital clinical scale with sonar height rod 600 lb x 0.2 lb detecto's apex-sh series eye-level digital physician scales feature touchless sonar height rods and an extra-wide flat platform measuring 17 in w x 17 in d x 2.75 in h. The apex® scale automatically captures patient weight and height readings and displays both onscreen without pushing a single button. The apex® features 600 lb x 0.2 lb / 300 kg x 0.1 kg capacity 0.75-inch-high lcd weight readouts units locking into kilograms or pounds bmi calculation ac or battery power ( both sold separately ) 1 rs-232 serial port and 1 micro usb-b port and hl7 ieee 11073 compliance.