Cardinal's SRL electro-mechanical pit type truck scale and ASRL axle load scale are designed for fixed installation in a concrete pit. The SRL heavy-duty welded steel truck scale is still considered the benchmark in truck scale concepts. Thousands of installations over the past 70 years are testimony to its superior quality and long-term accuracy. Since its introduction, Cardinal has continued to modernize and improve its design: only four main levers with one transverse lever on the four section scale and two main levers withone transverse lever on the two section scale.

The ASRL pit type axle load scales feature the same all-steel welded design to determine whether individual axle loads are within legal limits. These ruggedly-designed axle load scales are to be permanently installed in a concrete pit and utilize the unique features of Cardinal's truck scales, thus assuring a lifetime of dependable service beyond that which it will receive under the most severe usage.