| 摘要 |
The device (D) has a horizontal support base receiving a pair of brackets spaced for allowing height adjustable fixation of a metal vertical plate (5). Another pair of brackets (8a, 8b) is fixedly arranged on another horizontal support base (2) to allow fixation of a vertical backplate (9) at a fixed position. The plate and the backplate respectively comprise vertical oblong holes and openings to receive bolts such that the plate is adjusted in height with respect to the backplate and blocked in position at a determined height based on requirements of height of a formwork.
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