A scaffolding ledger, also known as a horizontal or transom, is a horizontal member that connects the vertical components (standards) of a scaffolding system. It provides additional support and stability to the structure. The ledger typically runs parallel to the building facade and helps distribute the load evenly. There are various types of ledgers, such as putlog ledgers, which support the putlogs or transoms at right angles, and facade ledgers, which run parallel to the building. These components play a crucial role in the overall strength and safety of the scaffolding system.