Hanger system having bubble level insert

A hanger system for securing an object to a vertical support surface, the system comprising:

• a) an elongate rigid first structure sizeable to a desired length and having a first-structure attachment plane attachable to the object and an angularly protruding first-structure engagement plane, said first-structure attachment and engagement planes extending substantially the entire length of said first structure;
• b) an elongate rigid second structure sizeable to a desired length and having a second-structure attachment plane attachable to the vertical support structure and an angularly protruding second-structure engagement plane, said second-structure attachment and engagement planes extending substantially the entire length of said second structure and whereby said first-structure and said second-structure engagement planes are engageable with each other for hanging the object on the wall;
• c) a retainer structure extending the length of the second structure along a single continuous plane, said retainer structure exteriorly accessible along the entire length thereof;
• and
• d) a spirit level slidingly and removably situated within the retainer structure and exteriorly visible along the entire length of said retainer structure for permitting the positioning and hanging of the second structure in a level configuration on said vertical support.