The HS-300 is an electronic device to use where either weight or height measurements are necessary. The scale provides accurate weight with easy to read LCD display with retractable aluminum height rod. It has a large weighing range and can measure height from 60 cm to 210 cm/ 24" x 84". Powder coated mild steel weighing platform and handrail, four load cells with hold function, auto-off, tare , low battery and RS-232. Operates on four AAA batteries and US AC adapter (both included). Each scale has underside adjustable feet and comes with rollers for easy transportation.