Ideal for precise measurements when space is limited, e.g. underneath
growth or roofings.
With its working range of 50-80cm the MIDI pole allows for prisms to
be positioned closer to the measuring point than with standard-sized
prism poles. Therefore, the resulting error caused by slightly non-perpendicular
positioning is minimized.

With the mini poles the prism can be positioned closely above the
measuring point. The error caused by a slightly misaligned bubble level
is minimized in comparison to using standard prism poles.