Upload
others
View
8
Download
0
Embed Size (px)
Citation preview
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.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 3221 (1966): Sets for Drawing Instruments [PGD 22:Educational Instruments and Equipment]
Ist3!221-1966
Indian Standard
SETS FOR DRAWING INSTRUMENTS
Optica! and Mathematical Instruments Sectional Committee: EDC 36
Chairman
DR C. S. RAO
Members
Rcplrsmtin:
The Andhra Scientific Co Ltd, Masulipatam
SRRI P. V. SUBBA RAO (.I!irmn& to Dr C. S. Rao i
SEBI S. BALA~IJBBAMAX-YA~~ Central %Vater & Power Commission, New Delhi Sam K. S. CHEWY ( Alkmak )
SRRI A. N. BEATTACHARYYA SEBI R. R. CHAKBABOBTY
Ministry.of Defence ( R & D) The Natronal Instruments Limited, Jadavpur
SHBI .J. SASYAL ( Affnnuk) CHIEF HYDROORAPHEB ( NAVY ) Indian Navy
STAFF OFFICEB ( HYDRO ) ( Akmole ) Saxr P. N. DEOBEA~TA Directorate General of Technical Development
( Ministry of Supply, Technical Development & Male&l Planning )
S HBI V. KEISHNAMOOB~Y t Altnnate I SHBI M. W. DESAI Rolea&, Designs & Standards Organisation ( ,Minis-
try of Railways ) DIRECTOI~ ( MAP PUBLICATION )
COL K. L. KEOSLA ( Akwfe) MAJ S. GANWLI SEBI j. L. HUXAB
Survey of India, Dehra Dun
kfinistry of Defence ( DGI ) Central Public Works Department, hfinistry of Works
& Housing SEBI D. MAJUYDAB
SEBI B. R. ,~.IANKHAND DE J. PBASAD
Office of the Development Commisioner; Small Scale Industries, hlinijtry of Industry
The Koh-i-Noor ( India) Private Ltd, Varanasi Central ScientiEc Instruments Orgamsation ( CSIR ),
Chandigarh ) SHRI B. L. SEARMA ( Altcmott
SHBIPBEMPBAILASH S-1 P. C. J AlN ( Afkmok )
National Ph!-sical Laboratory ( CSIR ), New Delhi
DE hl. V. RADHAPBISF~NAIUFLTHY Madras Institute of Trchnology, Madras Smxr E. B. RAJDIX+EAB
SSXBI SUBHASH RAJDE~~AB Raj-Dcr-Kar & Co, Bombay
( Alfcmatr ) Ds I. RAMAXB~SHNA RAO In personal capacity ( 16-3-5 Oflcial Colony, Viz&ha-
pafnam-2 ) REPB~CSENTATIVE Directorate General, Ordnanre Factories ( Ministry
of Defencc )
! Confinued on page 2 )
INDIAN STANDARDS INSTITUTION MANAX BHAVAN, 9 BAIWUR SHAH ZAFAR MARC
NEW DELHI 110002
IS : 3’221- 1966
(‘ontinucdfrom pap 1 )
Rcprtscnting
Quality Marked Goods Manufacturcn’ Co-operatic t Association Ltd. Roorkee
SRRI S. K. GAUTAM ( Aftcmatc ) YHHI H. C. VERMA Associated Instrument Manufacturers ( India )
Private Ltd, New Delhi SHEI D. NIRODY ( Altemak )
4~81 ht. V. PATANKAB, Director General, IS1 ( E.r-o&io Member ) Director ( Mech Engg )
secrets
SHBI S. M. RAZVI
Deputy Director ( Mech Engg ), IS1
Drawing Instruments Subcommittee, EDC 36 : 1
Canucncr
( 01. K. L. KHOSLA Survey of India, Debra Dun
Members
SHRI A. N. BEAF~ACHABYYA Ministry of Defence ( R 8i D j SHRI R. R. CHAKBABOBTY 51~~ S. GAN~ULI
The National Instruments Limited, Jadavpur Ministry of Dcfcnce ( DGI )
SHRI 1.. KRISHNAMOO~~THY Directorate General of Technical Development ( Ministry of Supply, Technical Development 8r Material Planning)
Sum B. R. MANKHAND The Koh-i-Noor ( India ) Private Ltd, Varanasi SHRI PRETTY PRAKASH
SARI P. C. JAIN ( Afttmatr) National Physical Laboratory ( CSIR ), New Delhi
.qHRt D. D. PUBI Central Scientific Instruments Organisation ( CSIR ),
SHRI S. I;. RAJA~OPALAK Chandigarh
SHRI S. N. SINEA Roads Organisation, Ministry of Transport Raja Bahadur Modal Poona Mills Ltd, Poona
SHRI P. K. MUKHERJEE ( Ahmate )
18:3221-1966
Indian Standard
SETS FOR DRAWING
0. FO
INSTRUMENTS
REWORD
0.1 This Indian Standard was adopted by the Indian Standards Institution on 20 August 1966, after the draft finalized by the Optical and Mathemati- cal Instruments Sectional Committee had been approved by the Mechanical Engineering Division Council.
0.2 Drawing instruments are normally sold in boxes consisting of an assortment of compasres, dividers, sprmg bows, inking pens, etc. The number and types of instruments supplied in the sets by different manu- facturers varies considerably. In order to rationalize the required number of instruments and to facilitate comparison, it is necessary to lay down the number of instruments for each set. However, it is not possible to have a cet which could cover all the requirements of elementarv drawing, as well as advanced technical drawings. For this reason, this standard specifics three sets which have been prepared with a view to optimum utility for the user.
0.3 The requirements of various drawing instruments are specified in relevant standards for each item. This standard is one of a series of Indian Standards being prepared for engineers’ drawing instruments. Other standards in the series are:
IS : 3206-1965 Specification for engineers’ drawing instruments, dividers
IS : 3207-1965 Specification for engineers’ drawing instruments, rotating compasses
IS : 3208-1965 Specification for engineers’ drawing instruments, half set of compasses
IS : 3209-l 965 Specification for engineers’ drawing instruments, spring hcnv compasses c
IS : 3210-1965 Specification for engineers’ dra\\-ing instr~ImcJlts,
drawing pen!:
IS : 32 1 l-1 965 Specification for engineers’ drawing instruments, pen points
IS : 3212-1965 Specification for engineers’ drawing instruments, lengthcziing bars
3
lts:32!21-1966
IS : 3213-1965 Specification for engineers’ drawing instruments, handles
IS : 3214- 1965 Specification for engineers’ drawing instruments, pencil points
IS : 32 15-I 965 ‘Specification for engineers’ drawing instruments, needle points
IS : 32 16-j 965 Specification for engineers’ drawing instruments, needles
IS : 32 17- 1965 Specification for engineers’ drawing instruments, prickers
IS : 3219-1966 Specification for engineers’ drawing instruments, boxes for leads and needles
IS : 3220-1966 Specification for engineers’ drawing instruments, screw drivers
IS: 3222 ( Part I )- Specification for instrument screws : Part I Fasteners for drawing instruments ( under preparation )
0.4 In addition to the specified instruments in the general set, beam com- passes, protractors, set squares, transparent scale and parallel ruler may also be supplied in the lower compartment of the box.
I. SCOPE
1 .I This standard specifies the types, sizes and number of drawing instru- ments which comprise a set of drawing instruments of the following types:
a) Drawing Instrument Set - General,
b) Drawing Instrument Set - Engineers’, and
c) Drawing Instrument Set - Utility.
2. DRAWING INSTRUMENT SET-GENERAL
2.1 The ,drawing instrument set- instruments:
general, shall consist of the following
size a) Compasses:
1) 2) 3)
4)
Spring bow pen Spring bow pencil Spring bow reversible, pen-pencil Bow, pen, double knee jointed with sector head joints
77 mm 77 mm 77 mm 77 mm
4
5) Bow, pencil, double knee jointed with sector head joints
6) Half set of compasses, shifting leg, double knee jointed, sector head; with following interchangeable attachments:
Needle point, pen point, pencil point and lengthening bar
7) Rotating compasses with needle, pen point and pencil point
b) Dividms:
1) Spring bow divider
2) Hair spring - sector head, with fine hair spring type adjustment and adjustable needle point
c) Drawing Pens:
1) Drawing pen, fine, with lifting or shift- ing nib
2) Detail pen
3) Dotting pen
4) Rail road pen
IS : 3221- 1966
S&e
77 mm
140 mm
120 mm
77 mm
127 mm
125 mm
125 mm
125 mm
125 mm
d) Box for leads and needles \ only when provision is not already made in the handle of pen or screlv driver >
e) Screw driver -
f) The following instruments may be supplied in the lower compart- ment of the box:
1) Beam compasses 250 mm
2) Protractor, rectangular 150 mm
3) Set square 45’ 150 mm
4) Set square 60’ 200 mm
5) Transparent scale 150 mm
6) Parallel ruler ( link type ) 150 mm
7) Proportional compasses 150 mm
8) Pricker 110 mm
5
ISr3221-1966
3. DRAWING INSTRUW SET--ENGINEERS’
3.1 The drawing instrument set - engineers’ shall consist of the following instruments:
a) Compasses
1) Spring bow pen 2) Spring bow pencil
3) Half set of compasses, shifting leg, double knee jointed, sector head with following interchange- able attachments: Needle points, pen point, pencil point and lengthening bar
77 mm
77 mm
14Omm
4) Rotating compasses with needle pen point and pencil point
b) I%z&fers - spring bow dividers
c) Drawing Pens - drawing pen, fine, with lifting or shifting nib
120 mm
77 mm
125 mm
d) Box for leads and needles (c&y when provision is not already made in the handle of pen or screw driver )
e) Screw driver
4. DRAWING INSTRUMENT SET - UTILITT
4.1 The drawing instrument set-utility shall consist of the fohov&g instruments:
Sip
a) Compasses - Half set of compasses, shifting leg, 122 mm double knee jointed, sector head with following interchangeable attachments: Needle point, pen point, pencil point and leng- thening bar
b) Dividers, sector head 112 mm c) Drawing pen with lifting nib 125 mm d) Box for leads and needles ( only when provision is not already
made m the handle of pen or screw driver > e) Screw driver
6