Contemporary black enamel 300mmHg manometer provides day-in, day-out dependability exceeds industry standards. Adcuff™ nylon cuff with ADC’s proprietary Size Guide™ marking system, prevents mis-cuffing. Chrome-plated brass air release valve. Leatherette carrying case with durable nylon zipper. Assembled, inspected, and packaged in the U.S.A. from foreign components. Meets or exceeds ANSI/AAMI/ISO 81060-1.