Devices used for increasing width of low boy trailer.

The structural member of a supported scaffold used to increase the base width of a scaffold in order to provide support for and increased stability of the scaffold.

A stabilizing structural member extending from the lift structure. Sometimes called base legs or straddle legs.

Support members attached to the crane's carrier frame which are used to the crane and may be blocked up to increase stability.

A term applied to bars bolted to the outer ends of the cross-trees on each side of a mast for the purpose of spreading the stays to the topmasts. Also applied to the upper mast tables which form a support for the topping lifts operating the cargo booms.