Using opto-encoders it is possible to manoeuvre the tip within a few millimetres of the desired location.
These fragments were then broken open again, with millimetre or submillimetre fragments from the centre used to isolate bacteria from the samples.
Already microelectronic mechanical machines with parts a thousandth of a millimetre across are now made by the million.
It is generally well banded on a millimetre to centimetre scale as defined by the variation from plagioclase to pyroxene-garnet-rich layers.
Measurements were based on 15 specimens for each genus, and are given in millimetres.
