I like precision mechanical balance scales for use in our store where we weigh out precious metals in grams. The electronic scales are nice, but I have been using the mechanical ones for so long without incident that I have grown to rely on them. Well, that is if they are made to exacting standards and have a proven reliability. We have been using Ohaus scales at our business for a number of years without any problems whatsoever.
I know that the younger generations are used to everything digital, but analog is very reliable. Analog scales allow you an infinite continuum in the range the scales can weigh. Digital is in discrete individual units. Therefore, I think a mechanical balance scale can be subtly more accurate than any digital scale. Of course, you need a scale that has markings for the fractional weights you want to measure. Our Ohaus scales that we use also have a liberal tare weight allowance for the metal pans we use to hold items. I like the longevity of the metal components and the stainless steel bowls we use to hold materials.
Our scales are used all day every business day only getting a rest on the weekends and holidays. They always pass their weights and measurements department recertification without any problems. I like not having to worry about scales losing their precision calibration with normal business use. It is critical for us to have precision scales for keeping up consumer confidence, but a lab working with things such as dangerous chemicals needs the precision for safety. Imagine a compounding pharmacy mixing up a chemo or other drug and not having a scale that weighed things perfectly precise. Our need for proper weights of things keeps us in business. Other companies may need the precision to protect life and safety.