A tolerance on a drawing is the easy part. Holding it on the two hundredth piece, a year later, on the same machine, is the capability. That takes years to build, and it does not live in a document. It lives in people, in suppliers, and in how the machines themselves are built. So we build the machines (Aura and Nimbus) we cut on. We run them ourselves, cutting parts for aerospace, medical devices and electronics. When an operator finds something on a platform after a year of cutting, the engineer who drew it hears that from him directly. It changes the next build. @vipin_sondhi and G Sundararaman go further back than we can, to HMT in 1953. We are glad to be counted in that line. Their conclusion in @businessline is the part worth reading: the question is not which sectors India should back, but which capabilities it should accumulate.