microscale

noun

1. (attributive, often)A very small or microscopic scale.
2. (attributive, often)The scale of microanalysis.
3. (attributive, often)A scale of physical consideration or of bounds having a characteristic dimension typically ranging from 1 to 999 µm (under 1 mm).

adj

1. (attributive, not-comparable, often)Extending over a relatively small area, particularly less than 1 kilometer; smaller than mesoscale.