Oxygen flow meters are variable area flow meters suitable for the control of the flow of medicinal gases, used for oxygen therapy. All the flow-meters we manufacture are pressure-compensated and running both single and double to allow simultaneous delivery to two patients using a single incoming source. The measuring unit (graduated rod and graduated rod cover) is made of polycarbonate, a material with high mechanical resistance which therefore makes this device particularly suitable for the heaviest uses. The use is simple. just connect the device to a centralized hospital system through the specific gas and norm connector (outlet). Once engaged, the flow delivered is regulated by the front adjustment tap, with micrometric pitch for a more precise adjustment.