रल ख र षण स ञ पन/DOCUMENT DESPATCH ADVICE प ज ड 22/(1435, 1436, 1437, 1438, 1439) डब य PGD 22/(1435, 1436, 1437, 1438, 1439) W

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1 य पक पर च लन म मस द DRAFTS IN WIDE CIRCULATION रल ख र षण स ञ पन/DOCUMENT DESPATCH ADVICE स दभभ /Ref. प ज ड 22/(1435, 1436, 1437, 1438, 1439) डब य PGD 22/(1435, 1436, 1437, 1438, 1439) W ददन क/Date तकन क सममतत/TECHNICAL COMMITTEE: श ष क उपक ण एव उप क ववषय सममतत प ज ड 22 Educational Instruments and Equipment Sectional Committee, PGD 22 सभ सद य क /To all Members of : 1. क) उ प दन एव स म य इ ज तनय ववभ ग य पर षद Production & General Engineering Division Council ख) श ष क उपक ण एव उप क ववषय सममतत प ज ड 22 Educational Instruments and Equipment Sectional Committee, PGD चच खन व ल अ य सद य/Other Interested Members Dear Sir(s), क पय श ष क उपक ण एव उप क ववषय सममतत प ज ड 22 व र त य र ककए गए न ल ख त स र र त कर /Please find enclosed the following document prepared by the Educational Instruments and Equipment Sectional Committee, PGD 22 र स य /DOC NO. प ज ड /PGD 22(1435)W श षक /TITLE आई एस /आई एस ओ :1989 य र क प लस भ ग 1 वग करण, आय म, क यक षररत अप ष ए और पर षण/ Mechanical Pencils Part 1: Classification, dimensions, performance requirement and testing (First revision of IS ) प ज ड /PGD 22(1436)W आई एस /आई एस ओ 9849:1991 रक लशक और रक श य उपकरण भ गखणत य उपकरण श द / Optics and optical instruments Geodetic instruments Vocabulary (First revision of IS 9849) प ज ड /PGD 22(1437)W आई एस /आई एस ओ 11145:1994 रक लशक एव रक लशक उपकरण रर एव रर स ब ध त उप कर श द एव रत क / Optics and optical instruments Lasers and laser-related equipment Vocabulary and symbols (First revision of IS 11145) प ज ड /PGD 22(1438)W आई एस 13117:1991 /आई एस ओ 8040:1986 रक लशक एव रक लशक उपकरण म ईर क प य ब इड एव य ब ट स य ज क आय म / Optics and optical instruments Microscopes Dimensions of tube slide and tube slot connections (First revision of IS 13117)

2 प ज ड /PGD 22(1439)W आई एस 14258:1995 /आई एस ओ 8424:1987 क च रक लशक क च 25 स पर ज -अ य वव य व र आरमण क रनतर ध त क पर षण एव वग करण Raw optical glass Testing of the resistance to attach by aqueous acidic solutions at 25 C and classification (First revision of IS 14258) क पय इस र क अव क कर और अप स मनतय यह बत त ह ए भ ज कक अ तत: यदद य म क क प म रक लशत ह ज ए त इ पर अम कर म आपक यवस य अथव क र ब र म य कद ईय आ सकत ह /Kindly examine the draft amendment to standards and forward your views stating any difficulties which you are likely to experience in your business or profession, if these are finally adopted as National Standards. स मनतय भ ज क अ नतम नतधथ/Last date for comments: यदद आपक क ई स मनत ह त क पय ददय गय र प म अ य ह त षर क उपर त पत भ ज /Comments, if any, may please be made in the format as given in overleaf and mailed to the undersigned at the above address. यदद आपक क ई स मनतय र त ह ह त ह य क व स प दक य स मनतय र त ह त ह त हम उपर त र त व क भ रत य म क क अ तलमत प स अध रहण कर क आपक सहमनत म क अ मनत द पर त यदद हम तक क स मनतय र त ह त ह तब य त व वव य सलमनत क अ यष स पर मशष प च त भ रत य म क क अ तलमत प म प ररत कर अध रदहत ककए ज ए ग अथव उ क इ छ स र आव यक क यषव ह ह त ववशय सलमनत क ववच र थष भ ज ज ए ग /In case, no comments are received or comments received are of editorial nature, you will kindly permit us to presume your approval for the above documents as finalized for adoption as Indian Standards. However, in case of comments of technical in nature are received then it may be finalized either in consultation with the Chairman, Sectional Committee or referred to the Sectional Committee. धयव द/Thanking you, पर भवद य/Yours faithfully, /Encls.: उपर त/As above (र जप /Rajpal) रम / Head (प ज ड /PGD)

3 FORMAT FOR SENDING COMMENTS ON BIS DOCUMENTS (Please use A4 size sheet of paper only and type within fields indicated. Comments on each clauses/subclauses/table/fig. etc be started on a fresh box. Information in Column 4 should include reasons for the comments and suggestions for modified wording of the clauses when the existing text is found not a epta le. Adhere e to this for at fa ilitates Se retariat s work) Doc No. & Title Doc.No.:PGD22 (1435) IS/ISO :2011 Mechanical pencils Part 1: Classification, Dimensions, Performance requirements and testing (first revision) Doc. No.: PGD22(1436) Optics and optical instruments Geodetic and surveying instruments - IS/ ISO 9849:2000 Vocabulary (first revision) Doc No.: PGD 22(1437) IS/ISO 11145::2006 Doc No.: PGD 22(1438) IS1311/ISO 8040:2001 Doc No.: PGD 22(1439) IS 14258/ISO 8424:1996 Optical and photonics- Laser and laser -related equipment - Vocabulary and symbols(first revision) Optics and optical instruments-microscopes-dimensions of tube side and tube slot connections (first revision) Raw optical glass-resistance to attack by aqueous acidic solutions at 25 0 C-Test method and classification (first revision) LAST DATE OF COMMENTS: NAME OF THE COMMENTATOR/ORGANIZATION: Sl. No. Clause/Subclause/ para/table/fig. No. commented Commentator/ Organization/ Abbreviation Type of Comments (General/Editorial/ Technical) Justification Proposed change For Bureau s Use

4 For Comments only Doc. No.: PG 22(1435)W IS/ISO :2011 July 2014 Draft Indian Standard MECHANICAL PENCILS PART 1 CLASSIFICATION, DIMENSIONS, PERFORMANCE REQUIREMENTS AND TESTING (First Revision) ICS Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is NATIONAL FOREWORD This Draft Indian Standard (Part 1)(First Revision) which is identical with ISO : 2011 'Mechanical pencils -Part 1 : Classification, dimensions, performance requirements and testing issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Educational Instruments and Equipment Sectional Committee and approval of the Production and General Engineering Division Council. This standard was originally published in This revision has been taken to align it with the latest version of ISO :2011. This standard is being published in following three parts: IS/ISO :2011 Mechanical pencils- Part 1 : Classification, dimensions, performance requirements and testing IS/ISO :1089 Mechanical pencils- Part 2 : Black leads- Classification and requirements and testing IS/ISO :1994 Mechanical pencils- Part3 : Black leads-bending strength of HB leads

5 The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviation. Certain terminology and conventions are, however, not identical to those used in the Indian Standards; attention is particularly drawn to the following: a) Wherever the words `International Standard' appears, referring to this standard, they should be read as `Indian Standard'. b) Comma (,) has been used as decimal marker while in Indian Standards it is current practice to use a full point (.) as the decimal marker. In this adopted standard, reference appears to certain International Standards for which Indian Standard also exist. The corresponding Indian Standard, which are to be substituted in their place, are listed below along with their degree of equivalence for the editions indicated: International Standards ISO :1996 Technical drawings- General principles presentation- Part 20 : Basic conventions for lines ISO Mechanical pencils- Part 2: Black leads- Classification and dimensions Corresponding Indian Standards IS (Pt 20):2001/ISO :1996 Technical drawing-general principles presentation- Part 20 Basic convention for lines IS/ISO :1989 Mechanical pencils-part 2 : Black leads- Classification and dimensions Degree of Equivalence Identical Identical For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2:1960 `Rules for rounding off numerical values (revised)'. The number of significant places retained in the rounded off values should be the same as that of the specified value in this standard. The product may also be marked with the Standard Mark. The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards act, 1986 and the Rules and Regulations made there under. The details of conditions under which the licence for the use of Standard Mark may be granted to manufactures or products, may be obtained from the Bureau of Indian standards.

6 For Comments only Draft Indian Standard OPTICS AND OPTICQAL INSTRUMENTS- GEODETIC AND SURVEYING INSTRUMENTS-VOCABULARY (First Revision) ICS Doc. No.: PG 22(1436)W IS/ISO 9849 : 2000 July 2014 Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is NATIONAL FOREWORD This Draft Indian Standard (First Revision) which is identical with ISO 9849:2000 Optics and optical instruments Geodetic and surveying instruments Vocabulary, issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Educational Instruments and Equipment Sectional Committee and approval of the Production and General Engineering Division Council. This standard was originally published in This revision of the standard has been taken to align it with the latest version of ISO 9849 : 2000 The standard defines the term used in various geodetic instruments such as distance meters, levels, theodolites, etc. The standard would be helpful in eliminating confusion arising from the use of different terms by different manufacturers and users. The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviation. Certain terminology and conventions are, however, not identical to those used in the Indian Standards; attention is particularly drawn to the following: a) Comma (,) has been used as decimal marker while in Indian Standards it is current practice to use a full point (.) as the decimal marker. b) Wherever the words `International Standard' appears, referring to this standard, they should be read as `Indian Standard'.

7 For Comments only Draft Indian Standard OPTICS AND PHOTONICS- LASERS AND LASER-RELATED EQUIPMENT- VOCABULARY AND SYMBOLS (First Revision) ICS ; ; Doc. No. PG 22(1437)W IS/ISO : 2006 July 2014 Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is NATIONAL FOREWORD This Draft Indian Standard (First Revision) which is identical with ISO 11145:2006 Optics and photonics Lasers and laser - related equipment Vocabulary and symbols, issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Educational Instruments and Equipment Sectional Committee and approval of the Production and General Engineering Division Council. This standard was originally published in This revision of the standard has been taken to align it with the latest version of ISO : Lasers are being increasingly used in the field of medical, defense and other engineering applications. This standard is intended to provide a uniform interpretation and usage of various technical terms and symbols associated with laser and laser related equipment. ISO 11145:2006 has been published in dual language, that is, English and French. This adopted Indian Standard is being published in English only and text given in French has been deleted. The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviation. Certain terminology and conventions are, however, not identical to those used in the Indian Standards; attention is particularly drawn to the following:

8 a) Wherever the words `International Standard' appears, referring to this standard, they should be read as `Indian Standard'. b) Comma (,) has been used as decimal marker while in Indian Standards it is current practice to use a full point (.) as the decimal marker.

9 For Comments only Draft Indian Standard OPTICS AND OPTICAL INSTRUMENTS MICROSCOPES DIMENSIONS OF TUBE SLIDE AND TUBE SLOT CONNECTIONS (First Revision) ICS Doc. No.: PG 22(1438)W Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is NATIONAL FOREWORD IS ISO 8040 : 2001 July 2014 This Draft Indian Standard which is identical with ISO 8040: 2001 Optics and optical instruments Microscopes Dimensions of tube slide and tube slot connections',issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Educational Instruments and Equipment Sectional Committee and approval of the Production and General Engineering Division Council. This standard was originally published in this revision has been taken to align it with the latest version of ISO 8040:2001. The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviation. Certain terminology and conventions are, however, not identical to those used in the Indian Standards; attention is particularly drawn to the following: a) Wherever the words `International Standard' appears, referring to this standard, they should be read as `Indian Standard'. b) Comma (,) has been used as decimal marker while in Indian Standards it is current practice to use a full point (.) as the decimal marker.

10 The technical committee has reviewed the provisions of the following International Standards referred in this adopted standard and has decided that they are acceptable for use in conjunction with this standard: International Standard ISO 8576:1996 Title Optics and Optical Instruments Microscopes Reference system of polarized light microscopy

11 For Comments only Draft Indian Standard Doc. No.: PG 22(1439)W IS ISO 8424:1996 July 2014 RAW MATERIAL GLASS RESISTANCE TO ATTACK BY AQUEOUS ACID SOLUTIONS AT 25 o C -TEST METHOD AND CLASSIFICATIOIN (First Revision) ICS Not to be reproduced without permission Last date for receipt of comment of BIS or used as Standard is NATIONAL FOREWORD This Draft Indian Standard which is identical with ISO 8424: 1996 Raw Optical glass-resistance to attack by aqueous acidic solutions at 25 C Test method and classification issued by the International Organization for Standardization (ISO) will be adopted by the Bureau of Indian Standards on the recommendation of the Educational Instruments and Equipment Sectional Committee and approval of the Production and General Engineering Division Council. This standard was originally published in This revision has been taken to align it with the latest version of ISO 8426:1996. The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviation. Certain terminology and conventions are, however, not identical to those used in the Indian Standards; attention is particularly drawn to the following: a) Comma (,) has been used as decimal marker while in Indian Standards it is current practice to use a full point (.) as the decimal marker. b) Wherever the words `International Standard' appears, referring to this standard, they should be read as `Indian Standard'.

12 In this adopted standard, reference appears to certain International Standards for which Indian Standard also exist. The corresponding Indian Standard, which are to be substituted in their place, are listed below along with their degree of equivalence for the editions indicated: International Standards ISO :1989 General tolerance- Part 1 : Tolerance for linear and angular dimensions without individual tolerance indications ISO 3696:1987 Water for analytical laboratory use- Specification and test method Corresponding Indian Standards IS 2102(Pt 1): 1993 General Tolerances- Part 1Tolerance for linear and angular dimensions without individual tolerance indications IS 1070:1992 Reagent grade water (third revision) Degree of Equivalence Identical with ISO : 1989 Technically equivalent The technical committee has reviewed the provisions of the following International Standards referred in this adopted standard and has decided that they are acceptable for use in conjunction with this standard: International Standard ISO 3585:1998 Title Borosilicate glass 3.3 Properties