The Bison C-Jacks are certified industrial scales engineered for precision weighing of ISO shipping containers with an accuracy of +/- 0.2%. These portable scales attach to the corners of a container to provide a digital weight readout on a user's smartphone via the Bison VGM App, offering essential data management capabilities such as logging gross weight, seal IDs, and photos. Engineered to serve a variety of industries including export, bulk loading, and military logistics, the C-Jacks eliminate the need for traditional weighbridges and reduce transport costs by allowing on-ground weighing of containers up to 35 tonnes (77,000 lbs). The system can be set up by a single person in under four minutes, providing a rapid and efficient solution for both grounded and elevated containers. A wireless handheld display ensures real-time weight monitoring during loading, and the scales support versatile container sizes and types, enhancing operational efficiency without delays.