For sale is a Used, Thermal Engineering Charg-Check 7009 Refrigeration Charging Cylinder 160oz. Product Description * Allows you to measure out precise quantities of refrigerant. * Allows you to carry small quantities of refrigerant to the job, yet buy refrigerant in large quantities and keep the drum back at your shop. * Is available in a steel carrying case to completely protect them from tough use. Cylinder need not be removed from the case as all connections and valves are accessible from front. Case forms a wstand to set on the floor or bench. * Are easily used in the field. They hang onto system being charged by means of a top- mounted bail. * Can be calibrated for ambient temperature variations by means of temperature correction chart on the side of the scale. This is required only if better than 2% accuracy is needed. * Safety relief valve for protection. * Plastic liquid level indicators