A reusable space adjustment device of a wale is provided to resist earth pressure sufficiently by transferring tensile force added on an anchor to a vertical structure evenly, to improve workability for coupling a vertical structure and a wale easily by a space adjustment device, and to reduce the cost of construction by reusing a space adjustment device required for installing a wale. A reusable space adjustment device of a wale(20) installed to a vertical support(S) is installed between the vertical support and the wale to adjust a space between the vertical structure and the wale, wherein a screw shaft(12) is coupled to a support block(11) by a ball joint(13), an adjustment nut(14) is inserted to the screw shaft to adjust a space between the vertical structure and the wale, and the wale is supported by the adjustment nut.
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