Air content meter in fresh concrete

Air content meter in fresh concrete

Easy-to-use, stainless steel clamping system employs four, one-piece, self-locking clamps to quickly seal lid to base with proper tension. O-ring assures watertight seal. Large, easy-to-read (to nearest 0.1%) 4-inch diameter, direct percentage gauge with calibration adjustments. Features all-brass super pump for reliability and faster operation. Unique pop-it valve eliminates seal failures. Furnished with all necessary accessories for calibration and operation, plus plastic, toolbox-style carrying case.