ISO 17:1973

Guide to the use of preferred numbers and of series of preferred numbers

Publication date: Apr 1, 1973

General information

Current stage: 90.93 Effective date: Mar 6, 2020

Originator: ISO

Owner: ISO/TC 19

Type: International Standard

ICS: 17.020

Languages: French English

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Status: Published

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Paper - EC$120.40

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Scope

The best scale will be determined by taking into consideration, in particular, the two following contradictory tendencies: a scale with too wide steps involves a waste of materials and an increase in the cost of manufacture, whereas a too closely spaced scale leads to an increase in the cost of tooling and also in the value of stock inventories. In selecting a scale of numerical values, choose that series having the highest ratio consistent with the desiderata to be satisfied, in the order: R 5, R 10, etc.

Life cycle

NOW

PUBLISHED
ISO 17:1973
90.93 Standard confirmed
Mar 6, 2020

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