Measures the entrained air in fresh mix concrete by observing the volume change resuting from the application of pressure. Constructed of cast aluminum chamber and lid, with four quick acting locking clamps. Direct pressure gage reading in the nearest 0.1 percent. Precision brass super pump has long strokes.

LA-0316 includes plastic carrying case, syringe, tamping rod, strike-off bar, calibration vessel and inside and outside calibration tubes. LA-0316-S is Press-Aire™ Meter only.