further engaged by the hammer or out from under nail heads having been both started and initially driven the device may have guide drillings both perpendicular and at an inclined angle to the surface upon which it is engaged application_number US 85647886 A description proceding therefore to describe the invention in detail reference should first be made to fig1 through 5 this shows a nail and or screw guide usable on a flat surface in which the line can readily be ascertained it consists of a pair of elongated bars 10 each have an upper face 11 a lower face 12 and opposing inner faces 13 the opposing inner faces 13 have semi cylindrical bores 14 preferably in both faces 13 and with the semi bores 14 in matching relationship with similar bores on the opposite face so that when the two bars are in inter facial contact or in the closed position the bores form a cylindrical bore through the device these bores may be of different diameters to suit nails and or screws of the various diameters means are provided to mount the bars in the desired spaced and parallel relationship when in the opened position said means taking the form of transverse mounting pins 15 extending from side to side through both of the bars 10 which are.