number of proprietary names, notably "Acrow prop" in the U.K., after the Acrow Group that introduced them in the UK.

Description

Jack posts are telescopic tubular steel props consisting of two primary parts, both tubular: the main body of the post, and the threaded jack screw or other adjustable fitting on one or both ends. Both ends are normally fitted with flat metal plates on the end, increasing their bearing surface. A recent improvement to Acrow props was to shape this baseplate with notches, allowing pallet

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