Abstract: A telescopically adjustable support brace is used to hold concrete form work at the proper linear distance during pouring operations. The brace comprises a pair of crossbars and telescoping adjustable arms that are locked by a pin inserted through aligned apertures. At the distal ends of each arm, a serrated cleat for digging into the form wall and prevent slippage. The cleats are connected to the arms by a threaded rod, permitting fine adjustments via mateable threads. The crossbars are connected by a pivot bolt or hinge. When the bolt or hinge is locked in place, the invention forms a horizontally rigid assembly, holding the concrete form walls or other objects apart. The hinge or bolt is released by drawing of a wire coupled through a retention member on a lock. When released, the brace pivots about the crossbars, permitting easy extraction of the brace from the forms.