ISO 12858-2:2020
(Main)Optics and optical instruments — Ancillary devices for geodetic instruments — Part 2: Tripods
Optics and optical instruments — Ancillary devices for geodetic instruments — Part 2: Tripods
This document specifies the most important requirements of telescopic tripods for surveying instruments and the connection between instrument and tripod. The requirements in this document enable instruments and tripods of different manufacturers to be joined to one another, without prejudicing their performance and their usefulness. This document is applicable to tripods which are used for levels, theodolites, tacheometers, GPS equipment, EDM instruments and in combination with targets, reflectors, antennae, etc.
Optique et instruments d'optique — Équipements annexes pour les instruments géodésiques — Partie 2: Trépieds
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INTERNATIONAL ISO
STANDARD 12858-2
Second edition
2020-06
Optics and optical instruments —
Ancillary devices for geodetic
instruments —
Part 2:
Tripods
Optique et instruments d'optique — Équipements annexes pour les
instruments géodésiques —
Partie 2: Trépieds
Reference number
ISO 12858-2:2020(E)
©
ISO 2020
---------------------- Page: 1 ----------------------
ISO 12858-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 12858-2:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design . 1
5 General features — Dimensions . 1
6 Requirements . 3
6.1 Tripod head . 3
6.2 Joints . 3
6.3 Clamping screw . 3
6.4 Tripod legs . 3
6.5 Tripod shoes . 3
6.6 Torsional rigidity . 7
6.7 Height stability under load . 7
6.8 Material . 7
6.9 Protection from corrosion . 7
7 Tools . 7
8 Designation and marking . 7
Annex A (informative) Parallel screw threads of Whitworth form . 9
Bibliography .10
© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 12858-2:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee
SC 6, Geodetic and surveying instruments.
This second edition cancels and replaces the first edition (ISO 12858-2:1999), which has been
technically revised. It also incorporates the Amendment ISO 12858-2:1999/Amd.1:2013. The changes
compared to the previous edition are as follows:
— editorial corrections.
A list of all parts in the ISO 12858 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 12858-2:2020(E)
Introduction
ISO 12858 consists of a series of parts which detail specifications for ancillary devices to be used with
geodetic instruments in surveying. This second part specifies requirements for tripods.
Additional parts, covering further ancillary devices, may be added to ISO 12858 as the need arises.
© ISO 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 12858-2:2020(E)
Optics and optical instrument
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 12858-2
ISO/TC 172/SC 6
Optics and optical instruments —
Secretariat: SNV
Ancillary devices for geodetic
Voting begins on:
2020-03-12 instruments —
Voting terminates on:
Part 2:
2020-05-07
Tripods
Optique et instruments d'optique — Équipements annexes pour les
instruments géodésiques —
Partie 2: Trépieds
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 12858-2:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 1 ----------------------
ISO/FDIS 12858-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 12858-2:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design . 1
5 General features — Dimensions . 1
6 Requirements . 3
6.1 Tripod head . 3
6.2 Joints . 3
6.3 Clamping screw . 3
6.4 Tripod legs . 3
6.5 Tripod shoes . 3
6.6 Torsional rigidity . 7
6.7 Height stability under load . 7
6.8 Material . 7
6.9 Protection from corrosion . 7
7 Tools . 7
8 Designation and marking . 7
Annex A (informative) Parallel screw threads of Whitworth form . 9
Bibliography .10
© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 12858-2:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee
SC 6, Geodetic and surveying instruments.
This second edition cancels and replaces the first edition (ISO 12858-2:1999), which has been
technically revised. It also incorporates the Amendment ISO 12858-2:1999/Amd 1:2013. The changes
compared to the previous edition are as follows:
— editorial corrections.
A list of all parts in the ISO 12858 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 12858-2:2020(E)
Introduction
ISO 12858 consists of a series of parts which detail specifications for ancillary devices to be used with
geodetic instruments in surveying. This second part specifies requirements for tripods.
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