The Haloscale Standard is a respirometer which measures both minute volume, as well as tidal volume to its most precise calculations. It sports double concentric dials (an outer one which measures 0-100 liters, and an inner one which measures 0-1 liters) of full and fractional liter measurements, an overall dial diameter of 2.5 inches, and overall weight of 5.7 ounces, structural dimensions of 2.85 inches x 2.75 inches, along with numerous others.