Gauges feature a 3" dial, all stainless steel construction, 1" high LCD with 11/16" high characters, zero/clear button, backlighting with adjustable contrast, min/max function, % full scale bar graph, low battery indicator, and 12 selectable engineering units. Password protected field calibration and disable functions. Gauge is FM Approved Class I, Div. 1. Whats included: carrying pouch, 3 AAA batteries, and 10-point calibration chart.