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Penetrometers (Product# HU2788)

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Calibrator checks accuracy of any pres sure-type concrete air meter. Set the specially designed canister upright at the bottom of the water-filled base, and the meter should read 5% air by vol ume. Two calibrators will check 10% air reading. Dimensions: 4 dia. x 3-31/4".

Product Specification
Dimensions Overall4 x 3-31/4 Inch