This is the Gicar FMRT-F-F version, with a 1.5 mm diameter orifice (nozzle). G 1/4" female threads. A functional flowmeter when tested with a multi-meter will result in a reading of 2.2k ohms.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.