An obsolete unit (nanometers) for measuring very small particles, like filter media sizes.
MMM
Definition
Millimicrons
mmm means Millimicrons.
✓ Verified term
You might also be looking for
Millimicrons
mmm means Millimicrons.
An obsolete unit (nanometers) for measuring very small particles, like filter media sizes.
You might also be looking for