I have been reading about various German electronic bomb fuzes, and, while I understand the arming sequences and times, I am curious as to the sensitivity of the fuze's anti-disturbance feature. In one design, mercury switches are arranged on 3 different axes of possible movement- the slightest tilt from it's resting position will set it off. But how about the trembler switches? I've heard that tapping the bomb with a pencil could set it off. What possible arrangement of a weighted spring contact could give that type of sensitivity? Anyone have any info or detailed pictures of the switches?