In everyday life there is often a need either to press or to put under the press has to resort to some kind of charge weights. However, a kind of the universal pressure can be a spring-loaded “clothespin” from portable lamps. B. VOLODIN

In everyday life there is often a need either to press or to put under the press has to resort to some kind of charge weights. However, a kind of the universal pressure can be a spring-loaded “clothespin” from portable lamps.