So, a sixty millimetre diameter pebble.
One millimetre to the left and who knows?
Ash particles are normally in the 50-100 micron (0.05 to 0.1 millimetre) range.
Last year his team achieved a milestone when it manoeuvred a 1.5-millimetre bead through a 5-millimetre artery in a living pig.
Graham Short etched the motto "Nothing is impossible" which measures just a tenth of a millimetre.
One millimetre (or the diameter of the head of a pin) is equal to one-million nanometres.
Progress will be watched through a microscope, by time-lapse photography. And whichever cell covers a tenth of a millimetre fastest will be declared the winner.
Winston dared not turn his head even by a millimetre, but sometimes her livid, gasping face came within the angle of his vision.
The bugs, which are less than a millimetre long, feed on scales of human skin and produce allergens which are easily inhaled during sleep.
The object on the left, less than a millimetre across in reality, is an example of what were once thought to be the encysted forms of Ediacaran algae.
The clutch contains friction disk (or driven plate) about 300 millimetre in diameter. It also contains a spring arrangement and a pressure plate for pressing this disk tightly against the smooth rear face of the flywheel.
These sections are dissected, using a laser, into slices a millimetre or less thick, and then scanned again, either with the micro-CT or with a scanning electron microscope.
