Mcleod Gauge with Mercury   The Mcleod Gauge with Mercury comes with a hose nipple connection at the back for connecting the measurement point to the gauge. The gauge is tilted (rotated) by 90° for measuring the vacuum readout. High purity mercury is provided along with gives precise results and finds extensive use in measuring vacuum at vacuum pumps, vacuum ejectors, vacuum systems, chemical, and pharma industry for vacuum measurement at reactors, vacuum metalizing plants, oil filtration units, and endless other uses.