ISO 12858-1:2014

Optics and optical instruments — Ancillary devices for geodetic instruments — Part 1: Invar levelling staffs

ISO 12858-1:2014 specifies the most important requirements of Invar levelling staffs used in geodesy and industry for precise measurement of heights in combination with either an optical-mechanical level equipped with a parallel plate micrometre, or a digital level of comparable precision. It is applicable to classical staffs with graduation lines and numbering and staffs used in digital levelling with code patterns. ISO 12858-1:2014 is not applicable to the detailed design and construction of Invar levelling staffs (e.g. materials, handles, fixing points for the struts, fixing of the Invar strip and of the circular level), which may be selected by the manufacturer as appropriate.

Optique et instruments d'optique — Equipements annexes pour les instruments géodésiques — Partie 1: Mires de nivellement en invar

General Information

• Status: Published
• Publication Date: 27-Jul-2014
• ICS: 17.180.30 - Optical measuring instruments
• Technical Committee: ISO/TC 172/SC 6 - Geodetic and surveying instruments
• Drafting Committee: ISO/TC 172/SC 6 - Geodetic and surveying instruments
• Current Stage: 9093 - International Standard confirmed
• Start Date: 13-Jan-2025
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 12858-1:1999 - Optics and optical instruments — Ancillary devices for geodetic instruments — Part 1: Invar levelling staffs
• Effective Date: 06-Nov-2010

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 12858-1
Second edition
2014-08-01
Optics and optical instruments —
Ancillary devices for geodetic
instruments —
Part 1:
Invar levelling staffs
Optique et instruments d’optique — Equipements annexes pour les
instruments géodésiques —
Partie 1: Mires de nivellement en invar
Reference number
©
ISO 2014
© ISO 2014
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ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design . 1
5 Invar scale strip . 1
6 Scale and scale numbering . 2
6.1 Classical staff . 2
6.2 Staffs for digital levels . 2
7 Zero-point error . 3
8 Baseplate . 3
9 Accessories . 3
10 Circular level . 3
11 Designation and marking . 3
Annex A (informative) Examples of Invar levelling staffs . 4
Foreword
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The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 6,
Geodetic and surveying instruments.
This second edition cancels and replaces the first edition (ISO 12858-1:1999), which has been technically
revised.
ISO 12858 consists of the following parts, under the general title Optics and optical instruments —
Ancillary devices for geodetic ins
...