“The Board having been pleased to direct that in future all descriptions of Ordnance Stores should be marked with the broad arrow as soon as they shall have been received as fit for His Majesty’s Service; all Storekeepers and Deputy Storekeepers and others are desired to cause this order to be accordingly attended to, in the Department under their direction, reporting to the Board in all cases when articles are received to which this mark cannot be applied”. [28th July 1806. Quoted from the Royal Australian Army Ordnance Corps website]
As a result the broad-arrow mark appears on everything from furniture to cooking pots and cutlery, packing crates and barrels, construction materials from timber to bricks and tools – and convict clothing. However an object that has a broad arrow on it doesn’t necessarily mean it has an association with convicts.