Here is my method for measuring and hanging framed pictures. Your art will end up at the correct viewing height and will be even with other frames in the room, even if they are different sizes. This is my own preferred method; there are others, like some folks will hang pictures with the tops or bottoms at the same height; others so that the middles are all level. My method places the two-thirds point uniformly at eye level, which I think looks best.
Step 1: Tools and Materials
Pencil and paper
Picture hangers (hooks)
Step 2: Location
Locate the wall you are hanging the picture on. If you are hanging a few of them, line them up at the base of the wall and space them to your satisfaction. Measure from frame center to frame center and write this number down. This will be the distance between hangers.
Step 3: Mark 66 Inches
Calculate the vertical line for the hanger, like from a corner or window, or in the middle between two windows, and make a small pencil mark at about eye level. Then measure from the floor to 66 inches, and make a mark there. Make the lines intersect.
Step 4: Measure Frame
Measure the height of the frame. Write it down. ( H )
Step 5: Measure the Wire
Measure the distance behind the frame from the top of the wire to the top of the frame. I do this by hooking the tape measure on the wire and pulling lightly to make it taut. Write it down. ( V )
Step 6: Make a Sketch
On a piece of paper make a diagram (this helps me). Make these calculations:
Take frame height ( H ), divide by three. This is ( E )
Measured down from the top of the frame, ( E ) is going to end up being eye level ( L, or 66" ), two thirds up the frame.
The difference between the 66 inch mark and where the hanger will go is ( D ).
Picture hanger is placed at ( X ).
So we have:
H divided by 3 = E ( Thirds )
E minus V = D ( Difference between wire and top third point )
66 plus D = X ( Eye level plus difference is where the hanger goes )
V corresponds to X ( The wire hangs on the hanger. Duh. )
It gets easier when you've done it once or twice.
(Tell me if I've made this stupidly complicated.)
Step 7: Make the Second Mark
Measure from your 66 inch mark UP 2 3/8 inches, and that is where the hook of you hanger goes. Make a mark.
Step 8: Install Hanger
Grab your hammer. Line up the pencil mark with the hanger hook, with the nail above it. Hold the nail securely as you hammer it lightly, you don't want it to bend or crack the wall.
Step 9: You're Done
Hang your art.
Level the frame.
This art is from Rob Cohn, photographer.