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HM-33 Volumetair™ Concrete Air Meter accurately and economically measures air content in any type of concrete, and performs well with lightweight mixes. It is constructed of PVC and fiberglass-reinforced plastic. The unit consists of a base and top housing, which fit together with a leakproof O-Ring seal and stainless steel over-center clamp assembly. Unit is very light for easy handling, and is best for occasional use. Parts clean easily with water. Base volume is 134in³ (2,200ml), and sight tube has 0—9.5% x 0.25% calibration. The meter comes complete with funnel, syringe, tamper, strike-off bar, calibrated cup, and mallet, all contained within a plastic case.
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