Using a strip of cloth, it is possible to screw the screw in any, even remote place.
Recommend to read
PERENIMAET SLIDES
When the need arises to duplicate any negative or slide, the question is how to do it. Contact method seems to be the easiest, but not always acceptable due to the complexity of...
PUMP-FLOAT
"No water and no amplitude, and no syudy..." This catch phrase from the pre-war Comedy "Volga-Volga" is very close and understandable to everyone who is associated with the earth, and...