Engineering drawing title blocks provide essential information required to identify, interpret, and control technical drawings. This page explains the structure, required fields, and standards for title blocks in accordance with ISO 7200 and BS 8888.
Title blocks are typically located in the bottom right corner of a drawing and contain key administrative, technical, and revision information.
ISO 7200 defines the requirements for title blocks used on technical drawings. Drawing sheet sizes and layouts should comply with ISO 5457.
BS ISO 7200 Technical Drawings- Title Blocks
identifies the title block requirements to be used on
engineering drawings.... The drawing sheet size
should be in accordance with "BS EN ISO 5457 TD-
Sizes and layout of drawing sheets"
ISO Drawing Sheet Sizes
A title block is the form on which the actual drawing
is a section. The title block includes
the border and the various sections for providing
quality, administrative and technical information.
The importance of the title block cannot
be minimised as it includes all the information which
enables the drawing to be intepreted, identified and
archived.
The title should include sufficient information to
identify the type of drawing e.g general arrangement,
or detail. It should also clearly describe in a
precise way what the drawing portrays
The notes below relate to the title boxes included on
in the title block to convey the necessary
information. The standard drawing sizes
and layouts are described elsewhere.
The basic requirements for a title block located at
the bottom right hand corner of a drawing are
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These items should be written in a rectangle which is
at the most 170mm wide.
The tile block should also include boxes for the
legal signatures of the originator and other persons
involved production of the drawing to the required
quality.
The drawing should also include a symbol identifying
the projection. The main scale and the linear
dimension units if other than "mm".
Mechanical drawings should list the standards use
for: indicating the surface texture: welds: general
tolerances and geometric tolerances, as notes
referring directly the the relevant standards or a
general note referring to the BS 8888.
(BS 8888 lists all of the relevant
standards.) BS 8888 should really only be
referenced if the drawing is in full accordance.
The drawing title block should indicate the date of
the first revision. In separate boxes to
the title block the current revision with an outline
description of the revision should be indicated.
On completion of each drawing revision
an additional revision box should be completed thus
providing a detailed history of the drawing.
Revision boxes record changes made to a drawing over time. Each revision includes a revision number, description of the change, date, and approval details.
