All you need to know about locks and picking them

Knock N’ Lock

Here is a short video I took of this marvelous cylinder today.

This cylinder is sold to one of my customers but I can I was very sorry to let it go..

Knock n lock is an Israeli invention in which the lock is operated by electric pulses or knocks.

One response

  1. Interesting design. I suspect it is easily vandalized with so much leverage provided by that huge handle though. Rick

    May 13, 2014 at 11:56 am

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