supply of wheel gauge-5 , portable ultrasonic thickness gauge for measuring thickness of metal sheet, pipes etc. upto 10 mm make: caltech/accuplus/metravi/stanlay or equivalent [ warranty period: 30 months after t he date of delivery ] ] , digital outside micrometer, range: 0-150 mm, make: mitutoyo / japan or starrett/ united states or kafer / germany/precision / insize only and specification as per annexure aa ttached [ warranty period: 30 months after the date of delivery ] ] , set of gauge (go and no-go) for checking backing ring used in class-e ctrbs as per fig 39 of rdso g-81 manual rev-3 material cold work tool steel to is: 3748:90 hardness 50/55 hrc with calibration c ertificate [ warranty period: 30 months after the date of delivery ] ]