Gage Blog

Differential leveling is often misunderstood and made more complicated than necessary. It is essentially as easy as A-B and critical to high precision straightness (line) or flatness (surface) measurements. Keep in mind when we talk of straightness or flatness we are not talking about the angle the surface is sitting at compared to the center of Earth’s gravity. While it is better to have the surface as “level” as possible before conducting a flatness measurement for several reasons, it is not the same thing as flatness. Flatness is concerned with the overall error (usually expressed as a height) from the lowest to highest point of the measured surface. Read more