Covidien Hi-Lo™ Hand Pressure GaugeHi-Lo™ Hand Pressure Gauge is mainly used to measure and adjust cuff inflation and pressure.Features:Convenient, ergonomic designCalibrated in cm H2OFitted with clip attachment for storage and quick accessEach unit is supplied with a detachable, long flexible connecting tubeAn extension tube is also available, separately packed, ready for useBuilt in vacuum valve for easy evacuation of low pressure cuffs