For smaller differences, microscopes can play an important role for part inspection and measurement. In fact, manufacturing employs different types of microscopes depending on whether they need to visually evaluate the part or dimensionally measure the part. For this reason there are microscopes made just for these particular purposes.
Simulations show Optimal Design for Bladeless Wind Turbines
"an 80cm mast" Really? I'm short but that's only half my height! Do they mean 800cm?