🧭 G. W. Schultze was a German Berlin-based water‑meter manufacturer (Schultze Wasserzählerfabrik) active from the early 20th century through the mid‑century period. The company produced domestic piston meters, rotary meters, and small Woltmann meters for municipal waterworks in Berlin and the surrounding region. Schultze’s instruments are characterised by robust brass castings and straightforward mechanisms, reflecting the practical engineering of mid‑tier German manufacturers.

Period of activity: Approx. 1900–1950s, with a clear peak in the 1920s–1930s

Urban expansion: Early 20th‑century Berlin saw rapid growth in apartment housing, small businesses, and municipal infrastructure, driving demand for reliable domestic and small commercial water meters.

🏭 Manufactured Products

Domestic meters:

Volumetric piston meters (Qn ~1.5–3 m³/h)Rotary meters for household use

Threaded brass‑body meters for apartment and small building installations

Commercial / small industrial meters:

Small Woltmann meters (horizontal‑axis) for shops, bakeries, workshops, and light industry

Often installed in low–medium flow applications within municipal networks

Registers with clear, utilitarian German typography typical of mid‑century instruments designed for long‑term municipal use, often remaining in service for decades.

📜 Archival footprint and verification

Schultze appears in Berlin waterworks procurement lists from the interwar period, confirming supply of domestic and small commercial meters.

Trade directories: Listed under “Wasserzählerfabriken” in regional industrial and commercial directories, identifying the firm explicitly as a water‑meter manufacturer.

Technical yearbooks: Referenced in water‑industry yearbooks and trade listings, alongside other recognised German makers.

Surviving instruments:

Schultze meters have been recovered from Berlin and Brandenburg installations and scrap inventories.hese surviving bodies and registers provide physical confirmation of the company’s production and design style.