Abstract: A layout tool may have a length and several marking areas or sections by which the headers, footers, and studs of a wall can be marked and subsequently assembled. The layout tool has a bend at about a right angle along the length of the layout tool allowing it to lay over multiple pieces of building material at once. Once marked, the building materials can be assembled quickly and with limited or no human error.

Abstract: A layout tool may have a length and several marking areas or sections by which the headers, footers, and studs of a wall can be marked and subsequently assembled. The layout tool has a bend at about a right angle along the length of the layout tool allowing it to lay over multiple pieces of building material at once. Once marked, the building materials can be assembled quickly and with limited or no human error.

Abstract: An improved flexure support for a movable wafer or mask holders in photolithographic projection machines, comprising a long slender wire extending between the positioning device and the holder along the X or Y axis so as to constrain the holder to move along the axis while permitting substantial freedom of movement of the holder in a direction perpendicular to the wire by flexing, a bracket housing attached either to the holder or the positioning device with a hollow cavity filled with elastomeric material, and a plate in the cavity and attached to one end of the wire, to permit limited movement of the holder along the axis while it is being restrained against such movement by the positioning device.