Hydraulic loads cells are the most rugged and long-lasting weighing device available in the scale market. Cardinal's extensive truck scale experience has culminated in developing The Guardian Hydraulic Truck Scale, the most dependable truck scale you can buy. Cardinal's Guardian Hydraulic Tuck Scales are ideal for the solid waste, aggregate, chemical, grain, and construction industries because they offer a high level of protection against many of the conditions that can adversely affect truck scale installations.