Gicar 1/4" Flowmeter (Fixed Wire, FMRT-F-F) This is the Gicar FMRT-F-F flowmeter, hardwired with a 1.5 mm orifice and G 1/4" female threads on both ports. It's the volumetric sensor that tells your machine's control board how much water has passed through the group, so it's central to shot-to-shot consistency on programmable machines. SPECIFICATIONS Gicar FMRT-F-F, fixed-wire lead 1.5 mm orifice G 1/4" female x female threads Functional resistance: approximately 2.2k ohms measured across the leads COMPATIBILITY Fits: machines using Gicar-type flowmeters, including many Ascaso, La Marzocco, and Rancilio models Replaces: Gicar 9.0.54.05G, 9.0.55.05G, 9.0.78.00, 9.0.78.00G, 9.0.95.05G, 9.0.95.19G, 9.0.96.06; Ascaso V..499; La Marzocco LAD070; Rancilio 10705126, 10705201, 10705208, 34070050; Nuova Ricambi 300038; Ricambi Gardosi R418 INSTALLATION Best left to a technician, it involves wiring the leads into the control board with correct polarity, though a confident DIYer comfortable with low-voltage wiring can manage it. PRO TIPS Before condemning your control board over inconsistent dosing, test the flowmeter itself: a healthy unit reads roughly 2.2k ohms across its leads on a multimeter. An open or dead-short reading means the flowmeter is the culprit, not the board. Match the orifice size, not just the thread, Gicar sells several nearly identical-looking flowmeters at different orifice sizes calibrated for different flow rates; swapping in the wrong one will throw off your programmed shot volumes even though it screws right in.