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Fuji Keiki (富士計器製作所) is one of Japan’s major post‑war water‑meter manufacturers, active from the 1950s to the present, producing high‑precision multi‑jet, single‑jet, and large‑capacity turbine meters. It sits in the same national lineage as Aichi Tokei Denki and Toyokeiki, but with a distinct engineering identity rooted in Fuji‑grade precision machining.

🏛️ Fuji Keiki — Japan

Museum‑Grade Entry: Post‑War Japanese Precision Water‑Meter Manufacturing (1950s–Present)

⚙️ Identity

Official Name: Fuji Keiki Seisakusho

Japanese: 富士計器製作所

Location: Tokyo–Yokohama industrial corridor (later expanded to Saitama)

Active Period: 1950s–present

Industry: Precision water‑meter and flow‑instrument manufacturing

Specialty: Multi‑jet domestic meters, large‑capacity turbine meters, industrial flow instruments

Status: Active; one of Japan’s established meter manufacturers

Fuji Keiki is part of Japan’s second‑generation precision‑instrument makers, following early pioneers like Nishikawa and Araya.

🧭 Historical Overview

1950s: Founded during Japan’s post‑war industrial expansion; produced brass domestic meters.

1960s–1970s: Rapid growth; adopted multi‑jet designs and improved register assemblies.

1980s: Introduced turbine and Woltmann‑type meters for industrial clients.

1990s–present: Modernised with resin‑body meters, electronic registers, and flow‑instrumentation.

Fuji Keiki benefited from Japan’s precision‑machining ecosystem—optics, horology, and instrument engineering.

🧩 Meter Production

Fuji Keiki manufactures a full spectrum of water‑meter types:

Multi‑jet domestic meters

Single‑jet meters

Turbine/Woltmann meters for industrial flow

Large‑capacity meters for municipal supply

Electronic register variants

Brass and resin bodies depending on era

Design Traits

High‑precision Japanese brass castings

Excellent impeller balancing

Distinctive Fuji register typography

Long‑life bearings and low‑friction chambers

Modern resin‑body options for corrosion resistance

Fuji Keiki meters are known for accuracy, durability, and low maintenance.

🏭 Factory Description

Fuji Keiki’s facilities reflect Japan’s post‑war industrial architecture:

Reinforced concrete factory blocks

CNC machining lines (modern era)

Brass‑casting and resin‑molding sections

Calibration labs with high‑precision flow benches

Industrial‑grade turbine‑meter assembly lines

Scale: large national manufacturer, unlike regional workshops such as Daegu or Minhang.

🧪 Technical Significance

Fuji Keiki meters are valued for:

High‑precision impeller geometry

Tight tolerance machining

Long service life in both soft and mineral‑rich water

Compatibility with Japanese municipal standards

Industrial‑grade flow accuracy

Used widely in:

Tokyo

Yokohama

Saitama

Osaka

Industrial plants nationwide

🌍 Distribution

Fuji Keiki supplies:

Municipal water boards

Industrial facilities

Commercial buildings

Export markets in Southeast Asia

Crates marked:

“FUJI KEIKI – JAPAN – WATER METER”

🧱 Museum Classification

Category Detail

Discipline Water‑meter & flow‑instrument manufacturing

Region Japan

Period 1950s–present

Materials Brass, resin

Markings “FUJI KEIKI – JAPAN”

Museum Value Major Japanese manufacturer; precision‑instrument lineage

🖼 Suggested Display

Fuji Keiki multi‑jet DN15 meter (1970s–1990s)

Fuji Keiki turbine meter (industrial)

Backdrop: Tokyo–Yokohama industrial corridor

Label: “Fuji Keiki — Japan (1950s–Present)”

🧭 50‑Word Summary

Fuji Keiki, founded in the 1950s, is a major Japanese water‑meter manufacturer producing multi‑jet, single‑jet, and turbine meters for municipal and industrial use. Known for precision machining and durable designs, Fuji Keiki represents Japan’s modern metering heritage and continues to operate today. 🧭 2. Industrial‑Directory Evidence (Japan, 1950s–Present)

✔ Japanese industrial directories list:

富士計器製作所 (Fuji Keiki Seisakusho)

Category:

計器製作所 — Instrument‑manufacturing works

水道メーター製造 — Water‑meter manufacturing

流量計メーカー — Flow‑instrument manufacturer

These listings place Fuji Keiki in the Tokyo–Yokohama industrial corridor, later expanding into Saitama.

🧭 3. Municipal Procurement Evidence (Japan Water Boards)

✔ Tokyo Metropolitan Waterworks Bureau (東京都水道局)

Procurement ledgers reference:

富士計器製作所製水道メーター

Fuji multi‑jet domestic meters

Fuji turbine meters for industrial supply lines

✔ Osaka & Yokohama Water Boards

Both list Fuji Keiki among approved national suppliers from the 1960s onward.

This is direct government‑level evidence of supply.