"""
Ramps closer push_depth and returns to the original position.
Inputs:
zpiezo an opened zpiezo.zpiezo instance
push_depth distance to approach, in nm
npoints number points during the approach and during the retreat
"""
Ramps closer push_depth and returns to the original position.
Inputs:
zpiezo an opened zpiezo.zpiezo instance
push_depth distance to approach, in nm
npoints number points during the approach and during the retreat