Simply stated microblades are small blades (Owen 1982, 2).
These artifacts, which are also called bladelets, suffer the same problems regarding varying size restrictions as blades.
The minimum width limit for a blade is the maximum acceptable width for a bladelet or microblade. This is between 8-12mm, depending on the typology in use. However, in some instances the maximum permissible length for this group has also been subject to discussion (see Tixier 1974 , 7-8).
N.B. in Norway a blade is a bladelet (mikroflekker) if it is less than 8mm. in width. The standard maximum width for a bladelet is 12 mm.