Want it or not, but when painting the walls or ceiling a paint roller, some part of the paint inevitably gets on your hands. Will save you from this simple device – a plastic bag, fixed between the cork and the neck of the bottle. Just need to mount it between the handle and the cushion holder.
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FOR BIPOLAR TRANSISTORS
This device whose description was published in the journal "Funkamateur" (GDR), used in various measuring devices or equipment, where necessary intermittent light or sound alarm....
SIMULATOR SOUNDS
"Development, published in the journal "modelist-Konstruktor", make ourselves photoelectron shooting. Works flawlessly. It is a pity that the sounds in the scheme is not provided....