Hole drilling jig apparatus

A jig apparatus for use with a drill bit and power means therefor to rotate said drill bit to form a hole in a workpiece with which the jig apparatus is positioned, said jig apparatus comprising:

• a body portion and a series of passages along a common axis at spaced intervals and through which the drill bit can be selectively inserted and into the workpiece to form the said holes in the workpiece, the said body portion includes first and second pairs of guide stops for selective movement with respect to the body portion whilst retained in position with the underside of the said body portion and the said first pair of guide stops are located closer to the passage centres than the said second pair of guide stops and the said guide stops are movable between a folded away position in the underside of the body portion and a folded out position in which the same protrude below the underside of the said body portion to be brought into contact with an edge of the workpiece so as to allow the said passages to be selectively positioned with respect to the workpiece edge at one of a first fixed spacing from the workpiece edge when the second pair of guide stops are folded out and engage with the workpiece edge and the first pair of guide stops are folded away, or a second fixed spacing from the workpiece edge when the first pair of guide stops are folded out and engage with the workpiece edge and the second pair of guide stops are folded away, so as to determine the position of the passages from the said edge to be one of said two possible fixed spacings with the first or the second pair of guides stops in contact with the said workpiece edge and said first spacing is greater than the said second spacing.