When the pencil lines of the drawing or drawing close to each other — the usual eraser, it is difficult to remove the erroneous one so as not to damage the adjacent correct. But this operation will be virtually the exact jewelry and if a thin slice of gum to hold in the “beak” of the spring: simple and convenient.
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TEST QUARTZ
allows you to quickly verify the health of the quartz resonators. Diagram of the device consists of a generator (T1), detector (D1, D2) and DC amplifier (T2). By connecting the quartz to...
RIDING ON THE VACUUM CLEANER…
Not so easy to store a bulky vacuum cleaner in a small kvartire. Meanwhile, it is quite possible to "hide" so that it did not occupy a special place. For example, it is very convenient...
