leg 24 but multi piece legs can be used in accordance with the present invention so long as the proximate portion 50 and the distal portion 52 are fixed relative to one another also preferably the leg 24 is made of aluminum and is anodized as stated the leg 24 includes a slot 56 that allows the leg 24 to be rotated and moved radially toward and away from the mount 22 the leg 24 can move nearly 360 u00b0 but due to its shape will engage the hand vacuum pump 38 other leg shapes and lengths within the scope of this invention will rotate 360 u00b0 relative to the mount 22 the combination of rotational and radial movement permits a glass repair technician to secure the mount 22 to the glass 32 at a location in the general vicinity of the damage then rotate and axially adjust the leg 24 to be positioned over the damage and then tighten the leg knob 26 to secure the leg 24 in place at the distal portion 52 of the leg 24 there is a drilled and tapped hole 70 for receiving the chamber positioning screw 28 the threaded engagement of the two permits fine adjustment of the chamber 30 relative to the glass 32 the chamber positioning screw 28 is preferably finely threaded at twenty threads per inch to enable slight but critical adjustment of the chamber 30 and also ensure fluid tight contact between the chamber 30 and the glass 32 the chamber positioning screw 28 includes at one end a knurled knob 72 that permits hand tightening and adjustment at the opposite end the chamber positioning screw 28 includes an unthreaded and relatively smooth post 74 that corresponds to a mating.