supply of pocket size mini tyre defect gauge , pocket size mini tyre defect gauge - the gauge shall be suitable for measurement of the foll owing defects: (a) excessively worn tread or deep flange, (b) radius at the root of wheel too small, (c) thin flange, (d) sharp flange, and (e) flat tyre. the gauge shall be made of hardened stainless-steel plate (mini mum 3.0-3.8 mm thick) with dimensional accuracy within +/- 0.05 mm. the gauge shall correspond in desi gn and function to pie model mtdg-1-2250 or equivalent, having approximate weight 135 g (without case), and supplied complete with cordura carrying case with belt holster and instruction manual. each gauge sh all be supplied with a valid calibration certificate traceable to nabl / govt.-approved test laboratory. [ war ranty period: 30 months after the date of delivery ] ]