🏛️ Compteurs M. Lemoine — Rouen (c.1905–1915)

A regional Norman manufacturer of hydrometric apparatus, specialising in small‑diameter domestic water meters during the expansion of household water connections in Rouen. Listed in the 1908 Normandy industrial directory and Didot–Bottin, Lemoine supplied 15–20 mm domestic meters, small commercial meters, and hydraulic accessories to municipal waterworks. Their products reflect the craftsmanship of early French hydraulic ateliers, whose meters were produced in limited quantities and rarely survive today. Founded c.1905 by Marcel Lemoine, a local constructeur specialising in hydrometric apparatus. The workshop operated from Rue du Renard Street, in the artisanal engineering district of Rouen, supplying small‑diameter domestic water meters and related hydraulic fittings to municipal water services across Normandy. In the early 20th century, Rue du Renard formed part of Rouen’s dense artisanal district, a network of narrow streets running between the Eau‑de‑Robec and Saint‑Vivien quarters. This neighbourhood was home to dozens of small mechanical workshops, metalworkers, and hydraulic fitters who supplied the city’s rapidly modernising water and gas networks.

The street’s proximity to the Robec canal, long lined with dye‑works and tanneries, created a natural cluster of trades specialising in water handling, measurement, and regulation.

🏭 Operations & Industrial Capabilities

Archival classifications allows reconstruction of the workshop’s operational scope with high confidence:

1. Hydrometric Apparatus Manufacturing

- Production of small‑diameter water meters (15–20 mm)

- Fabrication of flow‑measurement devices for domestic and small commercial use

- Assembly of register mechanisms (enamel dials, pointer registers)

2. Metalworking & Precision Machining

- Brass and bronze casting for meter bodies

- Machining of pistons, discs, and internal measuring chambers

- Production of threaded couplings and unions for municipal pipework

3. Municipal Supply Contracts

- Delivery of domestic meters for new household connections

- Supply of branch meters (“compteurs de branchement”)

- Maintenance and calibration services for Rouen’s waterworks

🧭 Geographic Reach

Primarily: Rouen, Seine‑Inférieure (now Seine‑Maritime), Eure and Lower Normandy municipalities.

Small ateliers rarely exported nationally; their meters were installed locally by municipal water services. 📜 Significance in French Meter History

Compteurs M. Lemoine is representative of a regional class of early 20th‑century French meter makers who:

- Produced small‑batch domestic meters

- Served local municipal networks

- Operated without national branding

- Left limited surviving documentation

- Contributed to the rapid expansion of domestic water metering before SAPPEL and Schlumberger dominated the market

Their meters are rare today and would valuable for museum collections because they illustrate localised engineering solutions during the formative years of French domestic water supply.