Labtron Fabric Air Permeability Tester is a high-precision device offers dynamic measurement of air permeability from 1 to 40,000 mm/s. It features microcomputer processing for direct results without manual calculation. With a sample pressure range of 1 to 4000 Pa, it includes auto-clamping, automatic nozzle replacement, and continuous measuring mode. The tester is equipped with an English LCD menu and a PC interface for easy operation.