Lake County has average temperatures ranging from the low 30's in the winter to the high 90's to low 100's in the summer. An average humidity of 50% in the winter and 30% in the summer which means virtually none of that famous California fog.
They are lever locks, with between 6 and 12 levers. They are double bitted and asymmetric, so the lock essentially has two different sets of levers. In addition, they are mostly quadruple throw, so you need to pass 4 sets of levers. The bolt work has 2 or 4 hardened steel circular bolts, providing good saw resistance.
Scroll down for video. German engineers have revealed designs to make 3D-printed 'bump keys' (shown). These devices can be used to break into popular pin tumbler design locks. In a video a lock is opened by a bump key and a hammer in seconds. To make the key all that is needed is a picture of the lock and pin positions. Later this month at an event known as LockCon 2014 German engineer Christian Holler will present his and Jos Weyers' bump key design.