The meter uses brass cover clamps, which can be adjusted for clamping pressure. A large, easy-to-read, 4″ diameter, direct percentage gauge with calibration adjustments is accurate to nearest 0.1%.The H-2786 meter also features the Humboldt, all-brass super pump, the most reliable and highest quality pump available. The meter’s base/bucket can be used as a 0.25 cu. ft. unit weight measure. The kit includes a wood or molded-plastic carrying case; tamping rod; strike-off bar; rubber bulb syringe; aluminum calibration vessel; inside calibration tube, outside calibration tube and operating instructions.