DETECTO new apex eye-level digital scale with a mechanical or didital hight rod is made in the USA great for medcal office, high-quality digital physician scale with height rod available. The apex® scale features 600 lb x 0.2 lb / 300 kg x 0.1 kg capacity, 17 in W x 17 in D x 2.75 in H / 43.2 cm W x 43.2 cm D x 7 cm H platform, inline mechanical height rod/Digital Sonar Height Rod , eye-level weight display and column,two RS232 serial ports and one micro USB port. The apex® is powered by 12 AA batteries, which are not included, or an optional AC adapter.