इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 12879-1 (2012): Microfilming of technical drawings and other drawing office documents, Part 1: Operating procedures [MSD 5: Documentation and Information] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 12879 (Part 1) : 2012 ISO 3272-1 : 2003 Hkkjrh; ekud rduhdh Mªkbax vkSj vU; Mªkbax dk;kZy; çy[s k dh ekbØkfs IkQfYexa Hkkx 1 çpkyu fofèk;k¡ (igyk iqujh{k.k) Indian Standard MICROFILMING OF TECHNICAL DRAWINGS AND OTHER DRAWING OFFICE DOCUMENTS PART 1 OPERATING PROCEDURES ( First Revision ) ICS 01.100.01; 37.080 © BIS 2012 B U R E A U O F I N D I A N S T A N D A R D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 May 2012 Price Group 5 Documentation and Information Sectional Committee, MSD 5 NATIONAL FOREWORD This Indian Standard (Part 1) (First Revision) which is identical with ISO 3272-1 : 2003 ‘Microfilming of technical drawings and other drawing office documents — Part 1: Operating procedures’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Documentation and Information Sectional Committee and approval of the Management and Systems Division Council. This standard was originally published in 1990 based on ISO 3272-1 : 1983. The first revision of this standard has been undertaken with a view to bring it in line with the latest version of ISO Standard which has been technically revised. This standard is published in various parts. Other parts in this series are: Part 2 Quality criteria and control of 35 mm silver gelatin microfilms Part 3 Aperture card for 35 mm microfilm Part 4 Microfilming of drawings of special and exceptional elongated sizes Part 5 Test procedures for diazo duplicating of microfilm images in aperture cards The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’. In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their respective places are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence ISO 6196-1 : 1993 Micrographics IS 15027 (Part 1) : 2001 Microgra- Identical — Vocabulary — Part 1: General phics — Vocabulary: Part 1 General terms terms ISO 6196-2 : 1993 Micrographics — IS 15027 (Part 2) : 2001 Microgra- do Vocabulary — Part 2: Image phics — Vocabulary: Part 2 Image positions and methods of recording positions and methods of recording ISO 6196-3 : 1997 Micrographics — IS 15027 (Part 3) : 2003 Microgra- do Vocabulary — Part 3: Film phics — Vocabulary: Part 3 Film processing processing ISO 6428 : 1982 Technical drawings IS 10164 : 1985 Requirements to do — Requirements for microcopying execute technical drawings for microcopying (first revision) (Continued on third cover) IS 12879 (Part 1) : 2012 ISO 3272-1 : 2003 Introduction Drawing offices produce, in addition to drawings, documents that differ in purpose, form and intention. Microfilming enables the information contained in these documents to be reduced, thus facilitating transport, handling and storage. Faithful reconstitution of a microform can only be accomplished readily if the microform satisfies precise requirements with respect to dimensions and quality. The quality requirements themselves can be fulfilled readily only if the original document is prepared in accordance with ISO 6428. Progress towards the adoption of ISO 5457 varies in different countries and many organizations have large holdings of documents, which are not of the standardized sizes because they were produced before the publication of ISO 5457. These documents are still used and microfilming can provide a common carrier that will facilitate international exchange of the information contained in these documents and those of ISO 5457 sizes. Microfilming procedures, systems and methods differ from country to country. These differences will not adversely affect the exchanges of technical drawings and other drawing office documents if the specifications in this International Standard are followed. Microforms of technical drawings are generally produced on 35 mm unperforated film. The use of aperture cards for international exchange can circumvent the problems associated with the procedural differences in producing microforms. ISO 3272-1 is concerned with operating procedures for microfilming technical drawings not larger than A0 (or of maximum size 912 mm × 1 230 mm). ISO 3272-2 deals with quality requirements, ISO 3272-3 deals with aperture cards, ISO 3272-4 deals with drawings larger than A0, ISO 3272-5 deals with diazo aperture card duplicators and ISO 3272-6 deals with systems for producing enlargements from 35 mm microfilm. i IS 12879 (Part 1) : 2012 ISO 3272-1 : 2003 Indian Standard MICROFILMING OF TECHNICAL DRAWINGS AND OTHER DRAWING OFFICE DOCUMENTS PART 1 OPERATING PROCEDURES ( First Revision ) 1 Scope This part of ISO 3272 specifies reduction ratios, enlargement ratios, sizes of enlargement and the resulting image sizes for recording on 35 mm unperforated microfilm technical drawings and other drawing office documents, such as architects' plans, calculation notes, specifications, vocabularies and parts lists. This part of ISO 3272 applies to the microfilming of documents no larger than A0 with dark lines and characters on a light background, preferably prepared in accordance with ISO 5457 and ISO 6428. It may also apply to sizes other than those specified in ISO 5457, provided they are no larger than 912 mm × 1 230 mm and can be accommodated within a single frame of 35 mm microfilm, as specified in this part of ISO 3272. This part of ISO 3272 does not apply to images created by a COM device. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5457:1999, Technical product documentation — Sizes and layout of drawing sheets ISO 6148:2001, Photography — Micrographic films, spools and cores — Dimensions ISO 6196-1:1993, Micrographics — Vocabulary — Part 1: General terms ISO 6196-2:1993, Micrographics — Vocabulary — Part 2: Image positions and methods of recording ISO 6196-3: 1997, Micrographics — Vocabulary — Part 3: Film processing ISO 6428:1982, Technical drawings — Requirements for microcopying 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6196-1, ISO 6196-2 and ISO 6196-3 apply. 4 Unexposed film stock The unexposed film shall be unperforated film in accordance with ISO 6148. 1 IS 12879 (Part 1) : 2012 ISO 3272-1 : 2003 5 Originals 5.1 Size It is recommended that originals of A-series, as specified in ISO 5457, be used. NOTE All documents larger than 912 mm × 1 230 mm are excluded from this part of ISO 3272; they are dealt with in ISO 3272-4. 5.2 Preparation The original is usually a document that has been drawn, typed or prepared by automatic means or by a combination of these methods. The original should be in accordance with ISO 6428. 5.3 Centre markings Centre markings shall appear on all four sides of the original, projecting at right angles from the border lines toward the edge of the sheet. They shall be located with an accuracy of ± 0,5 mm as specified in ISO 5457. 5.4 Orientation marks Two orientation marks shall be provided on each drawing, one on a short side and one on a long side, as specified in ISO 5457. 5.5 Borders The borders of the original shall be wide enough to accommodate all the tolerances required for microform reproduction. Borders of the following minimum widths shall be provided on all four sides of A-size originals, as specified in Table 1 and ISO 5457. Table 1 — Border widths Designation Millimetres A0 20 A1 20 A2 10 A3 10 A4 10 5.6 Metric graduation For reduction and enlargement purposes, a metric graduation, 100 mm long, shall be provided on the border of each drawing. 5.7 Position of documents on table of planetary-type cameras The centre markings of the original and the centre markings on the document base of the camera shall coincide within a tolerance of ± 3 mm. 2 IS 12879 (Part 1) : 2012 ISO 3272-1 : 2003 6 Filming procedures 6.1 Frame area, image area, frame pitch Frame area, image area and frame pitch are given in Figure 1 and Table 2. Figure 1 — Frame area (a × b ), image area, (a × b ) and frame pitch (t) 2 2 1 1 Table 2 — Dimensions of frame area, image area and frame pitch 35 mm microfilm Dimensions mm Frame area 32 0 ×45 0 −0,5 −0,5 (a × b ) 2 2 Image area 30,4 × 41,0 (max.) (a × b ) 1 1 Frame pitch 52 0 −1,2 6.2 Reduction ratios Nominal reduction ratios of 1/30, 1/21, 2 and 1/15 are recommended for filming A-size documents specified in ISO 5457 and Table 3. Nominal reduction ratios of 1/30, 1/24 and 1/16 are acceptable for all document sizes as given in Table 4. The tolerance on the nominal ratios shall be+4%. (These tolerances apply to the 0 denominator, see Table 3.) 3