supply of mechanical folding type wheel diameter gaugemechanical folding type wheel diameter gauge,mechanical folding type wheel diameter gauge for ksr wheel fitted with vernier gives the reading of wheel diameter di rect on precise laser etched measuring scale. the gauge is suitable for open wheel sets only. supplied in nicely finished wooden storin g & transportation box with carrying handles with working manual. specification:-(1)accuracy: + -0.1 mm.(2)least count:0.1mm.(3)m easuring point on wheel:67mm.(4)wheel contact point :made of carbide.(5)for range:- 470mm to 540mm. [ warranty period: 30 mo nths after the date of delivery ] ]