0$-$1MM+
0.001 metres.
The smallest BB is 4.5mm. As far as I know there is no 1mm BB gun.
0.7
1mm 1mm
1mm
Define the measurement
1mm converts to 0.000001km
1/10cm=1mm
1mm. per year
How thick is it
Snails are 1mm to 312 mm long. That means they don't weigh much...