B METERS s.r.l. is an Italian maker of water and thermal energy meters founded in 1991 by the Budai family in Gonars Italy (Udine). The company operates three plants and now produces about 1.4 to 2.2 million meters annually for 90+ countries. Its catalog spans single‑jet, multi‑jet, and Woltmann mechanical meters; ultrasonic and electromagnetic instruments; and smart modules for M‑Bus, Wireless M‑Bus/OMS, and LoRaWAN. The WDE‑K50 Woltmann illustrates modular migration from mechanical metering to IoT telemetry via the IWM‑LR4 radio module. Manufacturing is anchored in Industry 4.0 automation and electronic MID test benches, operated in compliance with ISO/IEC 17025 principles. B METERS holds ISO 9001/14001 and EU MID (Modules B & D) approvals, with additional potable‑water certifications (e.g., WRAS/ACS/KIWA) on specific lines. The firm exemplifies Europe’s transition from mechanical dials to connected, standards‑compliant metering systems. The HWM.Museum has a 15mm Single-Jet cold water meter with pulse in its collection.