The kwikstage transom 1.2 m  fits into the lower “V” pressings on the kwikstage scaffold standards. As a result, the Kwikstage Transom 1.2 m acts as a horizontal brace keeping the scaffold standards at a fixed distance. In addition, used to carry the steel boards/platform.
Installation is always horizontal across the width of the scaffold and at 90 degrees to the ledger. When building scaffolding, transoms are generally installed every 2m vertically. And in addition at 0.5m and 1.0m above the platform to act as a safety barrier.