🏛️ Tula Instrument Works — Tula, Russia The Tula Instrument Works, active from the 1930s–1990s, produced rugged brass water meters alongside industrial gauges and precision instruments. Known for simple, durable designs and “ТУЛА ПРИБОР” calibration plates, the factory supplied central‑Russian municipal networks and represents the instrument‑engineering branch of Soviet metering heritage.

⚙️ 1. Identity

Official Name: Тульский Приборостроительный Завод

Translation: Tula Instrument Works

Location: Tula, Russia (formerly USSR)

Active Period: ~1930s–1990s

Industry: Precision instruments, industrial gauges, mechanical meters

Specialty: Brass domestic water meters produced alongside pressure gauges, flow sensors, and industrial metrology devices

Status: Defunct as a meter manufacturer; absorbed into post‑Soviet industrial restructuring

🧭 2. Historical Overview

Period Development

1930–1945 Founded as a precision‑instrument plant; produced gauges, mechanical counters, and early water meters.

1945–1960 Post‑war expansion; water‑meter production formalised under Soviet municipal supply planning.

1960–1980 Peak output; produced simple brass domestic meters for central and southern Russian water boards.

1980–1990 Introduced polymer register covers and improved impeller assemblies.

Post‑1991 Production declined; water‑meter line discontinued; plant reorganised.

Tula’s long tradition of metalworking and armament manufacturing supported its precision‑instrument capabilities.

🏭 3. Meter Production

Tula Instrument Works manufactured its own water meters, confirmed by:

- Soviet industrial registries listing водомеры

- Municipal procurement ledgers from Tula, Ryazan, and Kaluga

- Surviving calibration plates stamped “ТУЛА – ПРИБОР”

Product Types

- Single‑jet brass domestic meters

- Multi‑jet meters (limited production)

- Cold‑water meters for municipal networks

- Industrial meters for factories and cooperatives

all with GOST‑standard calibration

Distribution was to central Russian water boards.

This was a medium‑scale Soviet factory, larger than Cluj or Moravské, but smaller than major plants like Minsk or Kiev.

Their meters represent the instrument‑engineering branch of Soviet metering — factories that produced meters as part of broader precision‑instrument portfolios. 🏢 Extracts from official USSR protocols. The warranty period for the uninterrupted operation of the water meter in 1951 was 11/2 years. They were produced in accordance with GOST 6019-51. Water meters were inspected by the Committee for Standards, Measures and Measuring Instruments under the Council of Ministers of the USSR before they were put into circulation. Water meters were installed on the supply water pipe in a heated room. The water meter is considered to be working correctly if the error in the readings does not exceed 3% of the water actually consumed. Periodically, after 2-3 years, the device was checked with a control water meter.

Water meters were delivered to the retail chain packed in a cardboard box. The package contained: a passport (certificate) and instructions for storage, installation and operation. The case indicated: the name of the device, the manufacturer, the serial number, the year of manufacture, the flow rate or the characteristic water flow rate in m³/h. Water meters were stored in closed dry rooms.

Lit.: Lobachev P.V., Shevelev F.A., Modern water meters for water pipelines, Moscow-Leningrad, 1952. Thanks to the Mintorg Museum Russia.