I saw several commercial tools out there for hanging a picture easily and level so I decided to make my own.

Requires:

• 1/2" dowel - about $1.50 at the local Home Depot
• 2x 4d nails with head cut off to put in the bracket hole for measuring the picture hangers distance. You can drill the hole bigger if you need to.
• line level
• 2 zip ties

Print 2 of these brackets and slide them on the dowel using the nails as the guide to properly get the distance between the brackets. You may want to test print to get the fit right for the dowel as my dialed in settings for my Ender3 may differ from your printer. The fit should be tight on the dowel so when you slide the brackets they stay in place. Once you have the distance right with the nails as your guide on the picture hangers then hold the bracket against the wall and rotate the brackets so both are aligned touching the wall. Be careful not to change the distance between the brackets. This will insure that the nails are both pointing level. Once you have the brackets both pointing level then hold the bracket to the wall pushing one of the nails in to make a indent in the wall and use the level to get it level and push the other side in to make two indents in the wall where you will place your permanent nail that the picture will hang on.