Show tricky bookmark A dentist who found it impossible to keep the right place in his ap book recently displayed his patented invention a tricky bookmark that automatically keeps the place as each page is turned it consists of a small metal clamp to which is attached a two inch long fine wire spring from the end of which a straight two inch length of the same wire protrudes at right angles to the spring the marker is clamped on the edge of the books back cover As each page is turned the little spring gives slightly and then snaps back so that tha t the straight wire always marks the place lying on top of the right hand page anyway it seems to work |