
Neat craftsman, working in his workshop, be sure to tie a safety apron — so as not to stain or damage clothing. And not to bother with a drawstring, it is better to attach to the apron two wire hook: hook them or lose one moment.
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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....
THE PROPELLER ON THE MACHINE
Manufacturer of air screw requires special precision and accuracy. The proposed device will greatly facilitate your work: processing of the pressure surface of the screw with sufficient...