while the brace is being held upright by tie wire 60 connector 80 and leveler 55 accordingly a simple threaded screwjack riser shaft 54 fig1 of about an inch or so in diameter has proven adequate to satisfy these purposes of our invention riser shaft 54 fig5 slips within a slightly oversized circular receiving collar 57 welded to horizontal member 30 leveling is accomplished by advancing or retracting wingnut 58 that is matingly threaded to travel upwards or down on riser shaft 54 cap 59 covers the exposed end of riser 54 for safety purposes other similar leveling devices such as manual or hydraulic jacks or any one of a wide variety of known leveling devices would equally suffice in place of screwjack 55 and such devices remain within the novel features of our invention masonry tradesmen in general are familiar with such screwjack leveling devices as they find extensive use on scaffolding thus in our preferred embodiment we have shown a screwjack 55 rather than some other suitable alternative such as those mentioned above briefly returning again to fig4 and 5 please note that vertical member 40 has freedom of rotational movement into and away from the wall 11 by a nut bolt fastener 97 seated within a pair of triangularly shaped strengthening flanges 99 this fastener 97 may of course also take the form of a pin passing through openings in the flange 99 and held there by any well known securing device such as a pull ring or clip not shown but understood in this art for leveling purposes at fig5 a workman simply spins advances and or.