supply of gauges for aar h type centre buffer couplergauges for aar h type centre buffer coupler,gauges for aar h type centre buffer coupler of lhb coaches. made of hard steel alloy or stainless steel with hardness 45-50 hrc as per attach ed specifications in annexure ? i. (i) contour maintenance gauge (knuckle profile gauge): apta drawing/gauge no.31000. (ii) aligning wing limit gauge: apta drawing/gauge no. 32600. (iii) contour condemning limit gauge (jaw-gap gauge) apta drawing/gauge no. 34100-1. (iv) knuckle nose wear and stretch limit gauge: apta drawing/gauge no.341002a. (v) vertical height aligning wing pocket & guard arm gauge (go gauge-must pass): apta drawing/gauge no.34101 -4 (vi) vertical height condemning limit aligning wing pocket & guard arm gauge (no-go gauge-must not pass): apta drawing/gauge no.44250-5. [ warrant y period: 30 months after the date of delivery ] ]