feeler gauge - indian standard

8/12/2019 Feeler Gauge - indian standard

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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.

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Invent a New India Using Knowledge

/0)"1 &2 324 #' 5 *)6Jawaharlal Nehru

Step Out From the Old to the New

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The Right to Information, The Right to Live

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199l79:1999t-1-1

ENGINEERING METROLOGY - FEELER1

GAUGESSecondRevision

-~-SecondReprint PRIL 1999

UDC 53171152

Q BIS 1990BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR M+RG

NEW DELHI 110002Allgnst 1990 Prism Gromp2

( Reaffirmed 2005 )


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Engineering Metrology Sectional Committee, LMD 05

FOREWORDThis Indian Standard Second Revision) was adopted by the Bureau of Indian Standards on13 March 1990, after the draft finalized by the Engineering Metrology Sectional Committee hadbeen approved by the Light Mechanical Engineering Division Council.This standard was originally ublished in 1965.number of sets from 7 to 4. ?I First Revision was issued in 1976 reducing thehis second revision has been brought out in the light of prevailingtechnical practices in the country. Number of sets has been increased from 4 to 5 and 4 diffkrentlengths have been included to serve all interests.In the preparation of this standard, considerable assistance has been derived from BS 957Part 2 ) : 1969 Feeler gauges-Part 2: Metric units issued by the British Standards InstitutionBSI ).


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IS 3179 1990I ndian Standard

ENGINEERING METROLOGY - FEELERGAUGESSecond Rev i si on

1 SCOPE1.1 This standard covers the requirements forfeeler gauges comprising a series of gaugingblades of graded thicknesses from 003 to100 mm and assembled in a protective sheath.2 REFERErvcES2.1 The following Indian Standard is necessaryadjunct to this standard:

IS No. 7Xe1501 Method for Vickers hardness(Part 1) : 1984 test for metallic materials:Part 1 HV 5 to HV 100 ( secondrevision3 DIMElWIO~ AND TOLERANCES3.1 The blades shall have the following thick-nesses assembled in the sets in the manner givenbelow ( SM ulso Fig. 1). The order in whichthe blades are given in the sets below may notbe the most suitable for assembly. It isdesirable that each thin blade should be giventhe maximum protection by being interleavedbetween two thicker blades:

I No of B z sNo. in t

10 005 to 020 in steps of005, and 030 to 008 insteps of 01013 005 to 030 in steps of005, and 040 to 100 insteps of 01013 003 to 010 in steps of001, and 015,020, 030,040 and 05020 005 to 100 in steps of

005Above 035 up toand including 065

28 005 to 014 in steps of001, and 015 to 100 insteps of 005

nkkness ofBla s inmm

NOTE- In view of tbe delicate nature of OF03and004 mm blades, it& recommended that these may beincluded in duplicate in the set.3.2 LengthThe following effective lengths ( L , are recom-mended ( see Fig. 1 ):

75,100,250 and 300 mm3.3 WidthThe blades shall be approximately 10 mm wideat the heel and may be parallel or tapered.The outer ends of blades shall be approximatelysemi-circular. Blades if tapered shall be taperedfor the outer part of their length so that thewidth of the tip is approximately 6 mm.3.4 AceuxacyThe thickness of a blade shall not depart fromits nominal value by more than the amountgiven in co1 2 of Table 1, and any variationin thickness in each blade shall not exceed theamount given in co1 3 of Table 1.

Table 1 Tolefyhzn Thickness( Clau5 .4)

AUdimensiona in millimetres.NomiadThkk-nesmof Bkdc

(1)003 up to andincluding 004Above 004 up toand incloning 035

Above 065 up toand including 100

PermimmiblcDeptihucfrom Nomi-nal Thickllus(2)

*:ooM

f 0005

f 0308 0008

f 0010

0005

0010

1


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FEELER GAUGE (SET No.2 1HOLE FOR FIXING

75 min.,EFFECTIVE LENGTH L-------_p- TOTAL LENGTH L +2 jw--.----.-- .____I_ -I__-._... .___

BMJE (SHAPE OPTIONAL)AlI dimemions in millimetres.

~~~~ 1 I IMENSIONS ANQ AWWBLY OF FEBLBR GAuoE4 MATERUL4.1 The Blades shall be made from suitablequality steel and shall be hardened and tem-pered to a hardness of not less than 400 HVand not more than 600 HV.4.2 Blades in the thickness range above 03 mmshall be tested for hardness in accordance withIS 1501 Part 1 ) : 1984 using a test load of50 N which shall be applied for 15 seconds.Blades less than 03 mm thick should be sub-jected to a scratch comparison test wherebythe blade shall be placed on a hard, polishedsurface and scratched with a diamond tippedor hard steel stylus which has a ti radius ofapproximately 06 mm. The mar P producedshall then be compared with a similar markproduced on a steel test piece of known hard-nes in the range 400-500 HV. The mark shallbe made in the same manner and using thesame force on both the feeler blade and the testpiece.5 GENERAL REQ~MENTS5.1 SheathThe blades shall be hinged in the sheath on ascrew and nut of such a design that the bladesare removable. The nut shall be in the form

2

of a bush passing through both sides of thesheath and forming a hinge upon which theblades may be rotated. The sheath shall be sodesigned as to fully protect the blades, whennot in use.5.2 FinishThe blade surfacesdeformations andThe blades shallthroughout.6 DESiGNATION

and edges shall be free fromshall have a smooth finish.be free from sharp edges

6.1 Feeler gagues shall be designated with:a) Set number,b) Length, andc) Number of this standard.

ExamphFeeler gauges of set No. 2 length100 mm and conforming to the require-ments of this standard shall be desig-nated as:

Feeler Gagues Set 2 Length 100 IS 3179


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ls 3179 19987 MARKING7.1 BladesEach blade shall be legibly and permanentlymarked with nominal thickness in mill imetresand the marking should not protrude above thesurface.7.2 SheathSheaths shall be legibly and permanently markedwith the following:

a Word mm,b Word Set No.,c Range of feeler gauges, andd Indication of the source of manufacture.

7.3 Standard MarkingThe feeler gauges may also be marked with theStandard Mark, details of which may beobtained from Bureau of Indian Standards.8 PACKING8.1 As a protection against climatic conditionsthe blades and the sheath shall be coated withlanolin or other suitable anticorrosive prepa-ration.

NOTE- Certain types of preparatioxq having apetroleum jelly bus have been found suitable, but it ianecessary to select a preparation which will not causestaining or gummng together of the blades.


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Amendments Issued Since PublicationAmend No. Date of Issue Text Affected

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feeler gauge - indian standard

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