Supply Of Ring Gauge For Pinion Of Wag-9/wap-7 Locos. Reference Rdso Drawing No: - Skel- 5043 Alt. 0 Along With Calibration Certificate. Note: - Supply Of Ring Gauge With The Following Items 1 Pulling Extractor For Easy Removal Of Ring Gauge From Shaft Pinion 2 Gauge Go & No Go Size: - 15.0mm +/-0.30 With Calibration Certificate..