The Digital Permeability Meter is a precision instrument used to measure the permeability of foundry sands. It efficiently measures absolute permeability for AFS and Metric specimens. The device allows for additional attachments to measure relative permeability in molds and cores, and absolute permeability in unbonded sand. It operates automatically with compressed air supply and displays digital readings for ease of use. The equipment supports Ethernet connectivity for data management and requires specific electrical and compressed air supply standards for operation.