Abstract: A level indicating instrument permitting simultaneous reading in two horizontal and/or vertical planes, one of which planes may be preset to any desired deviation from the horizontal. A pair of straight-edges perpendicular to each other along their long axis are coupled to a bubble indicator of the bull's-eye type. The bubble indicator may be rotated relative to the straight edges and set to indicate vertically or horizontally or any desired preset angle between vertical and horizontal.

Abstract: A portable decking system comprising a transporter, decking panels and support or shoring means. The transporter is provided with wheels so as to be movable and is used to transport and position the decking panels and/or the shoring means. Lifting means is provided on the transporter to selectively raise or lower a decking panel to a desired position. Once a decking panel is properly positioned by the transporter, the shoring means are utilized to support the decking panels and the transporter is removed. Each decking panel has mounted on its upper surface a plate on which concrete is poured. Each shoring means is provided with adjusting means for selectively adjusting the length thereof to facilitate the positioning and removal of the shoring means.