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.
Invinity to build 20MWh flow battery in UK
Redux flow cells have had nowhere near the R+D effort compared to Lithium ion. They certainly have the potential (pun not intended) for longer...