Abstract: An alignment tool (10) for use in the correct alignment of two planar members such as glass sheets, comprises suction means (12) for securing to a first sheet, roller means (16) for bearing against and positioning a further sheet, and adjustment means (19, 20, 22) for adjusting the relative positions of the two sheets.

Abstract: A clamping device 10 comprises a first part 12 and a second part 14 together with means 16 for drawing the two parts together. The first part 12 comprises a longer member 18 and a vertically disposed elongate member 20 at the end of which is pivotally mounted a suction pad 24 and means of which the first part may be secured to a planar member such as a sheet of glass. Similarly, the second part 14 has a suction pad 28 pivotally mounted thereon for securement to a further planar member. In use, the suction pads 24, 28 are secured to adjacent planar members and the second part 14 is then moved along part 18 as far as possible and then is secured in position relative to the first part 12 in order to urge the edges of the planar members together.