The publisher has built a very successful niche in special interest books of a technical and engineering nature. This is a worthy addition to the list. The author has described the design and construction of an 8 day regulator clock that requires only a modest selection of engineering tools and which could be built using components made to order by an engineering company. The result is a fine clock with an open dial that provides a view of most of the clock works, mounted in a wooden case with three sides in glass. As a clock, it will provide good time keeping. As an engineering project it will build into a satisfying and practical item that requires only wall space.