This support arm is often used to hold up the ice box lid for convenient access. On many boats it is also used to hold the chart table lid in the open position. Some Catalina models even employ it hold up a storage compartment lid under a berth leaving both hands free for the task at hand.
Includes a self latching feature. Lift the lid and release to lock the support arm in the up position. Another lift and the support arm latch releases allowing the lid to close.
Lengths from hinge pivot to hinge pivot: