The 402KL/402KLSB Physician Balance Beam Scale with built in height rod features a large heavy-duty steel 1/4 lb platform with raised balance beam for increased foot room. With accurate readout and easy weight reading,the weight capacity is 390 with optional counterweight to bump up to 490lb.. The 402KL Physician Balance Beam Scale also features easy to read double beams with slide poises and a 30"-78" measuring rod to help monitor growth. The rugged zinc die cast beam is constructed with copper, nickel, chrome plating with protective rolled edges, rounded corners and filled with durable white baked enamel finish.