supply of mechanical folding type wheel diameter gauge. , mechanical folding type wheel diameter gauge for kvr wheel fitted with vernier gives the re ading of wheel diameter direct on precise laser etched measuring scale. mechanical folding type wheel dia meter gauge for kvr wheel fitted with vernier gives the reading of wheel diameter direct on precise laser e tched measuring scale. the gauge is suitable for open wheel sets only. supplied in nicely finished wooden s toring & transportation box with carrying handles with working manual and with nabl calibration certificate . specification:-(1) accuracy: + -0.1 mm. (2) least count:0.1mm. (3) measuring point on wheel:54mm. (4) wheel contact point: made of carbide. (5) for range:- 480mm to 610mm. [ warranty period: 30 months a fter the date of delivery ] ]