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GS3 · Standards

World Metrology Day: 150 years of Metre Convention

1 min readScience & Technology
Battle IAS current affairs title card: World Metrology Day: 150 years of Metre Convention (GS3 · Standards, 20 May 2025)

What happened

  • DoCA marked 150 years of the Metre Convention signed in Paris on 20 May 1875 [PIB].

Background

  • India became the 13th country authorised to issue OIML certificates [PIB].

Why it matters

  • Certificates help exports of instruments.

How to use this in Mains

GS-III Science and technology developments and applications

  1. As per PIB (2025-05-20): doCA marked 150 years of the Metre Convention signed in Paris on 20 May 1875.
  2. Certificates help exports of instruments.
Quotable data point

DoCA marked 150 years of the Metre Convention signed in Paris on 20 May 1875.

PIB: World Metrology Day, 20 May 2025

Exam angle

UPSC

Prelims: OIML.

Practice MCQs

Original practice questions (not PYQs).

Practice · UPSC

Metre Convention year

Answer (a) & explanation

PIB.

Go deeper

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Official source: PIB: World Metrology Day, 20 May 2025

facts from cited sources only; faculty review pending