A roll of soft rags or foam rubber, emery paper wrapped, simple and perfectly working device for sanding curved surfaces, whether wood or metal. And the same skin in combination with two plates in it, fortified at a right angle to each other, help out in cases when you need to sand the surface of the angle or corner joint of a part or product.
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SERIES P: SEARCH CONTINUES
The work of our circle of technical creativity at the Polytechnic of light industry does the city have repeatedly told on the pages of "M-K." At the last such publication number 2 for...
QUARTZ CALIBRATOR
To calibrate, to establish or verify the performance of the radio equipment in the frequency range of 1-75 MHz allows this device. His scheme (Fig. 1) comprises a generator-the"type"...
