Pump can be easily cleaned without disassembly Adjustable stroke length can be set to limit the pressure per stroke 1st Pressure Port - 3/8-BSP (ISO228) female parallel thread fitting for the reference gauge or pressure module 2nd Pressure Port - 1/8-BSP (ISO228) female parallel thread fitting for the unit under test The vernier can be used as a stand-alone low pressure calibration source Two pressure ports allowing simultaneous connection: " in NPT female fitting for the reference gauge or pressure module "" NPT female fitting for the unit under test