ISO 6426-2:2002/Amd 1:2012

Overview

ISO 6426-2:2002/Amd 1:2012 is an amendment to the international standard ISO 6426-2, which focuses on horological vocabulary. Specifically, Part 2 of this standard covers technical and commercial definitions relevant to the horology industry-the scientific study and measurement of time and the art of making timepieces. This amendment updates key terminology and ensures consistency in language used across technical documents and commercial communications in horology.

Prepared by ISO Technical Committee 114 on Horology, Subcommittee SC 9 on Technical definitions, this document supports global standardization by refining the meanings of terms critical to watchmakers, component manufacturers, and retailers.

Key Topics

• Technical and Commercial Definitions: The amendment refines definitions related to horological components and terminology used within the watchmaking sector. Emphasis is placed on clarity for terms involving materials and parts used in mechanical timepieces.

• Horological Jewels: An important update involves the term "horological jewel," now clearly defined as a non-metallic movement component with a hardness exceeding HV 1200, which is critical for durability and technical performance.

• Functional Jewel: This term is specifically reserved to describe natural or synthetic jewels that improve frictional stability and reduce wear on contact surfaces within timepieces, referencing ISO 1112 for further specification.

• Technical Consistency: The amendment revises references and bibliographies, such as updating the cited version of ISO 1112 from 1999 to 2009, helping ensure alignment with the latest standards related to horological jewels.

• Vocabulary Precision: Adjustments in the alphabetical index, like replacing "jewel" with "horological jewel," ensure a more exact use of terminology that reflects current industry usage and enhances comprehension in both technical and commercial contexts.

Applications

• Watchmaking: Manufacturers and designers utilize these standardized terms to ensure consistent communication and quality assurance in the production of watches, clocks, and timing instruments.

• Component Specification: Suppliers of watch parts apply these definitions when describing the hardness and function of materials like synthetic rubies used in movements, aiding in procurement and quality control.

• Technical Documentation: The amendment aids technical writers and standardization bodies in creating clear, accurate manuals, catalogs, and datasheets that comply with international horological standards.

• Commercial Transactions: Buyers and sellers in the horology market rely on precise vocabulary to avoid misunderstandings and to maintain transparency about product specifications.

• Education and Research: Educators and researchers benefit from a harmonized vocabulary to teach horology and support innovations that build on recognized standard terms.

Related Standards

• ISO 1112:2009 – Horology - Functional and non-functional jewels: This standard specifies the specifications and classifications for synthetic and natural jewels used in horological applications, directly linked to definitions refined in ISO 6426-2:2002/Amd 1:2012.

• ISO/IEC Directives, Part 2 – Procedures for drafting International Standards: Provides the framework followed by ISO in preparing standards like ISO 6426-2 and its amendments.

• ISO 6426-1 – Horological vocabulary - Part 1: Basic terms: Complements Part 2 by covering foundational terminology for horology.

• Technical Committee ISO/TC 114 – Focuses on horological standards, offering various protocols and definitions critical to harmonizing the technical language across the watchmaking industry.

This amendment to ISO 6426-2 advances precision and usability of horological terminology, facilitating global communication and commercial exchange within the watchmaking sector, and supporting technical innovation and quality assurance in horology manufacturing and design.