"A mosquito will not shake your nose" ๐ฆ
It means to do the job so perfectly, efficiently and accurately that you cannot find the slightest flaw or find a flaw even in the details.
Source and image:
๐ต The expression came from among folk craftsmen - carpenters and jewelers. The point here is the jeweler's precision in fitting the pieces together:.
๐ต Carpentry: when two boards or furniture are attached so tightly that there is little space between them.
Image of a mosquito: The nose (snout) of a mosquito is a symbol of something incredibly delicate. If even such a thin object cannot enter the joint or groove, it means that the surface is completely smooth and the work is done flawlessly.
units of expression
๐ฟ Russian proverbs