High-quality type B pressure meters measure concrete air content and include many value-added improvements. Our standard model now features the exclusive Gorilla gauge, and a new, more affordable model offers an American-made stainless steel gauge. Other features of the two units are identical. Long-lasting stainless steel clamps adjust quickly and are less expensive to replace. Pump with large, easy-grip handle builds pressure quickly and is shielded to keep dirt and water out of the piston area. Brass petcocks have stainless steel ball valves for accuracy and durability. Petcock handles are vinyl coated for more comfortable operation. Dimensions and accuracy of the meters exceed ASTM requirements. Calibration vessel, calibration tubes, tamping rod, aluminum straightedge, syringe for water, carrying case and operating instructions are all included. Cast aluminum chamber volume can be used for unit weight and yield determinations. Sturdy plastic carrying case holds meter with all accessories securely in die-cut foam padding.