ADEVAllan Deviation
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Figure 10 shows the frequency stability (ADEV) for the same participants over the same interval.
Z Sensor noise is <0.3-nm Adev in a 0.1-Hz to 1-kHz bandwidth (BW) and sensor non-linearity is <0.2% (Adev/full travel) at full scan; Z height noise <0.06-nm Adev, 0.1-Hz to 1-kHz BW.
To provide a meaningful noise specification, you should ask manufacturers for three numbers: the noise value (often expressed in nanometers RMS or Adev), the bandwidth of the measurement, and the length of time of the measurement.
ADEV's ProIso and ProPipe run on top of AutoCAD, providing isometric and piping design capabilities.