GOST 2.302-68 PDF

Full title and description

GOST 2.302-68 — Unified system for design documentation. Scales (Единая система конструкторской документации. Масштабы). The standard defines the series of permissible drawing scales (natural, reduction and enlargement) and rules for their designation on technical drawings used across industry and construction.

Abstract

GOST 2.302-68 prescribes standard scales to be used on engineering and construction drawings (including lists of reduction and enlargement scales and the 1:1 natural scale), how the scale is indicated in the title block and next to individual views, and a small set of application exceptions (for example, it does not apply to photographs and printed illustrations). It also notes special permitted scales for large site/general-plan drawings where required.

General information

• Status: Active (in force).
• Publication date: Effective 01 January 1971 (approved by the standards authority in 1968; introduced 1971).
• Publisher: Approved by Gosstandart / Interstate standards bodies (GOST system); issued under the Unified System for Design Documentation (ЕСКД).
• ICS / categories: 01.100.01 (Technical drawings / general documentation systems).
• Edition / version: Designation GOST 2.302-68 (original approval 1968); implemented 1971; includes amendments published in IUS (indexes) — e.g., changes noted in 1980, 2001 and 2006; later reprints/editions available (reissue 2007 with amendments).
• Number of pages: Short form — typically 3 pages (varies slightly by published edition/collection).

Scope

The standard applies to technical drawings and design documentation in all branches of industry and construction. It establishes which numerical scales are to be used for representations (natural, reduction and enlargement), how to record the used scale(s) on the drawing (title block and next to views or fragments), and notes limited exceptions (photographic reproductions, printed illustrations). For very large plans (general plans, site plans) broader scales may be permitted by relevant discipline-specific rules.

Key topics and requirements

• Classification of scales into three groups: natural (1:1), reduction (examples: 1:2; 1:2.5; 1:4; 1:5; 1:10; 1:15; 1:20; 1:25; 1:40; 1:50; 1:75; 1:100; 1:200; 1:400; 1:500; 1:800; 1:1000) and enlargement (examples: 2:1; 2.5:1; 4:1; 5:1; 10:1; 20:1; 40:1; 50:1; 100:1).
• How to indicate the scale: the chosen scale is recorded in the title block (as 1:1, 1:2, 2:1, etc.); when a particular view or fragment uses a different scale it is indicated next to that view (often in parentheses) so both the drawing-scale and view-scale can be clear.
• Dimensions on drawings are given in actual units (actual sizes) regardless of the applied graphical scale; angular dimensions are not affected by the linear scale.
• Permitted discipline-specific extensions: for large civil/land plans, additional larger reduction scales (for example 1:2000, 1:5000 and beyond) are accepted by sector rules where needed.
• Applicability note: the standard does not cover photographs and editorial illustrations in printed publications.

Typical use and users

Used by mechanical and civil engineers, draftsmen, CAD operators, technical illustrators, architects and technical documentation specialists to ensure consistent, interoperable presentation of scaled drawings across organizations and projects. It is referenced when preparing title blocks, setting drawing scales in CAD templates, and teaching engineering graphics.

Related standards

Commonly used together with other ЕСКД/GOST documents for drawing preparation and documentation control — for example GOST 2.301 (Formats), GOST 2.104 (Title blocks / main inscriptions), GOST 2.303 / 2.305 (views, sections and conventions) and later ESKD revisions. These complementary standards govern sheet sizes, block content, and representation rules that interact with scale choice.

Keywords

scale, drawing scale, natural scale, enlargement scale, reduction scale, ESKD, GOST 2.302-68, technical drawings, title block, engineering graphics.

FAQ

Q: What is this standard?

A: GOST 2.302-68 is a GOST (ESKD) standard that specifies the permitted scales for technical drawings and rules for indicating those scales on drawings.

Q: What does it cover?

A: It covers the series of allowed drawing scales (natural, reduction and enlargement), how the scale is recorded in the title block and next to views, and brief application limits (it does not apply to photographs or printed illustrations). It also allows discipline-specific larger reduction scales for large-area plans where appropriate.

Q: Who typically uses it?

A: Engineers, designers, draftsmen, CAD specialists, architects and technical documentation authors who prepare or check technical drawings and related documentation.

Q: Is it current or superseded?

A: GOST 2.302-68 is treated as an active ЕСКД document in common collections and libraries; it has been maintained through amendments and reissues (indexes/updates noted in 1980, 2001, 2006 and later reprints). Users should check national/regional catalogs or the latest ESKD compilations for any jurisdictional modifications or replacement by newer national documents.

Q: Is it part of a series?

A: Yes — it is one element of the Unified System for Design Documentation (ЕСКД / GOST 2 series), which includes related standards on formats, title blocks, views, dimensioning and other drawing conventions.

Q: What are the key keywords?

A: scale, drawing scale, natural scale (1:1), reduction scales, enlargement scales, ESKD, GOST, title block, engineering graphics.