Original Watcher Clock, or also called By Map, Prime ¼ twentieth century. Pristine spherical brass box in perfect condition. At 12 of the outside of the box features a push button with a small window allowing hemispherical see a glimpse of the insole. On the interior, the mechanism bored and original template showing some holes in strategic places. The paper is original and is in excellent condition like new!. Inside the front cover numbering appears piece: 121158. In back are seen the holes for the screws, as the piece was nailed to the wall. Attach the two original keys, the strings and the closing, but the closing brace is damaged. The clockwork works first, what makes this unique piece a marvel.Such clocks were used to record the route of a vigilante. Were used throughout the twentieth century. The circular piece encastraba against the wall with screws in strategic locations by the guard in question was moving at a specific time. To have control of the company by the employee, it every time I passed by one of these watches had to press the outside, recording the time that he had reached that point, marked by a hole in one template. When in charge of the review looked at the template clock with hours marked by small agujerillos, knew if the worker had been punctual in their work. It also clocks were locked, so that only the reviewer had access to the paper template and could not be manipulated by the workers.Extraordinary and truly original piece for collectors demanding!Size: 14 cm in diameter