1. The user shall cause every wood planing machine which is used for overhand planing and which is not mechanically fed to be fitted with a cylindrical cutter block.
2. The user shall cause every planing machine used for overhand planing to be provided with a bridge guard which is capable of covering the full length and breadth of the cutting slot in the table and which can easily be adjusted in a vertical and horizontal direction.
3. No user shall require or permit any planing machine which is not mechanically fed to be used for the overhand planing of any piece of wood which is less than 300 mm long, unless a safe holder is used for such a piece of wood: Provided that this subregulation shall not apply to the planing of the edges of flat pieces of wood.
4. The user shall provide an effective guard for the feed roller of every planing machine used for thicknessing, except in the case of the combined machine for overhand planing and thicknessing.