There’s been a lot of research on behavioral finance and investing. In essence, what they’ve discovered is that investors often act in ways that are unconscious, irrational and ill-informed.

When workpieces are fitted together, size deviations accumulate. In order to assess the resulting clearance or interference, tolerance line-up calculations are performed. Arithmetical tolerance ...

In manufacturing, the devil is in the details—and the smallest oversight can lead to big headaches. Too often, it’s 4:30 p.m. on a Friday, you find out your trusted machinist is away on a fishing trip ...