Ring Gauge For Pinion Of Wag-9/Wap-7 Locos, Reference Rdso Drawing No. Skel - 5043, Alt -0 (Including Ring Gauge For Taper 1:50 As Per Ref 01 & Ring Gauge For Taper 1:25 As Per Ref 02) 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: 15.0 Mm (/- 0.30) With Calibration Certificate From Nabl Accredited Lab.