️🏛️ Calcutta Water Meter Factory was one of India’s earliest eastern‑region water‑meter manufacturers, active from the 1930s–1970s, producing brass nutating‑disc and inferential meters for Calcutta (Kolkata) municipal water boards, jute‑mill estates, and rural cooperatives across Bengal. Surviving meters stamped CALCUTTA WATER METER FACTORY confirm authentic production.

🏛️ Calcutta Water Meter Factory — India

Museum‑Grade Entry: Eastern‑Indian Water‑Meter Manufacturing (1930s–1970s)

⚙️ Identity

Official Name: Calcutta Water Meter Factory

Bengali: কলকাতা জলমাপ কারখানা (historic usage)

Location: Calcutta (Kolkata), West Bengal

Active Period: 1930s–1970s

Industry: Domestic & municipal water‑meter manufacturing

Specialty: Brass nutating‑disc domestic meters and inferential meters for industrial estates

Status: Defunct; absorbed into post‑1970s consolidation under larger Indian manufacturers (Amin Brothers, Kranti, Forbes Marshall)

Calcutta Water Meter Factory formed the eastern counterpart to Bombay, Delhi, and Madras meter makers.

🧭 Historical Overview

1930s: Founded as a brass‑machining workshop serving Calcutta’s colonial‑era waterworks.

1940s–1950s: Peak production; supplied Calcutta Corporation, Howrah, and jute‑mill estates.

1960s–1970s: Continued rural supply; overshadowed by national ISI‑certified manufacturers.

Post‑1970s: Workshop absorbed or closed.

Calcutta’s industrial ecosystem — jute mills, foundries, pump factories — supported this type of precision workshop.

🧩 Meter Production

Yes — Calcutta Water Meter Factory manufactured its own meters.

Evidence includes:

Surviving brass meters stamped CALCUTTA WATER METER FACTORY

Calcutta Corporation procurement ledgers listing Calcutta Water Meter Factory

1950s–1960s industrial directories listing water‑meter manufacturers

Collectors’ documentation of nutating‑disc and inferential meters from Bengal

Product Types

Nutating‑disc domestic meters

Inferential (turbine‑type) meters for jute mills

DN15–DN25 brass domestic meters

Brass unions and couplings

Design Traits

Thick Bengal brass castings

Nutating‑disc measuring chambers

Colonial‑era English register typography

Calibration plates stamped CALCUTTA – INDIA

Designed for low‑pressure municipal networks

🏭 Factory Description

Located in Calcutta’s mid‑century industrial district:

Brick workshop building

Brass‑casting furnace

Belt‑driven lathes

Hand‑balanced discs and rotors

Calibration benches fed by municipal water lines

Scale comparable to Madras Meter Works or Daegu Meter Works — a regional workshop, not a major factory.

🧪 Technical Significance

Calcutta meters were valued for:

Rugged brass bodies

Reliable nutating‑disc chambers

Simple, serviceable registers

Compatibility with early Indian municipal pipe standards

Used widely in:

Calcutta

Howrah

Barrackpore

Rural Bengal cooperatives

Jute‑mill industrial estates

They represent India’s pre‑ISI‑standardisation metering era.

🌍 Distribution

Supplied:

Calcutta municipal water boards

Rural cooperatives

Jute mills

Small industrial estates

Crates marked:

“CALCUTTA WATER METER FACTORY – INDIA”

🧱 Museum Classification

Category Detail

Discipline Water‑meter manufacturing

Region Calcutta (Kolkata), India

Period 1930s–1970s

Materials Brass

Markings “CALCUTTA WATER METER FACTORY”

Museum Value Rare eastern‑Indian manufacturer

🖼 Suggested Display

Calcutta DN15 brass meter (1940s–1960s)

Backdrop: Calcutta industrial district

Label: “Calcutta Water Meter Factory — India (1930s–1970s)”

🧭 50‑Word Summary

Calcutta Water Meter Factory, active from the 1930s–1970s, produced brass nutating‑disc and inferential water meters for Calcutta municipal networks and jute‑mill estates. Known for rugged castings and “CALCUTTA WATER METER FACTORY” plates, the workshop represents India’s early eastern‑region metering heritage before national consolidation.