Straightness

Straightness Measurement

Traditionally with a wire and a spirit level, in fact the wire and the spirit level are two very different measurements, they measure different characteristics of a guide. Here the wire measurements are absolute measurements where the spirit level measurements are incremental. Additional we measure an angle with the spirit levels and calculate the hight. So there can be large differences between spirit level measurements and laser based or granite stone based measurements.

The advantage of our ProLine system is here that we measure both axis simultaneously and absolute!

What does measuring straightness mean?

A line is a straight curve. We measure the "not straightness" or the curvature of something which looks straight from a distance. In engineering applications we measure and correct the straightness of machine components.

Typically we are dealing with a mixture from all of the following deviations: Horizontal curvature, vertical curvature, Roll, Screw and Surface discontinuities. Depending on the measurement method chosen these deviations will be more or less visible and more or less separable. The chosen mechanical adaptation is often as important as the measurement technology. We are looking for practical methods and procedures for measuring, correcting and documenting the “not straightness” of long machine components like linear guides.