I'm an artist who works primarily with found objects and recycled materials to create assemblage art and jewelry.
This necklace is one of my popular items and really quite simple to make.
Step 1: Materials, Supplies & Tools Needed
A narrow wooden ruler (the folding kind is usually a good width) that you are willing to cut into pieces
5 washers, nuts or other hardware
18 inch length of medium link chain
10 sturdy 8mm jump rings
2 sturdy 6mm jump rings
Supplies & tools:
A saw (not pictured)
A drill fitted with a 1/16" drill bit
2 small pliers
Ruler for measuring (optional)
Step 2: Cut the Ruler
Use the saw to cut five 1-inch pieces of the ruler.
Cut along the half-inch lines so that the printed numbers are clearly visible in the center of of each piece.
Step 3: Sand the Cut Edges
Use the sandpaper to smooth the cut edges of the ruler pieces and to round off the corners slightly.
Step 4: Drill Holes in the Ruler Pieces
Drill 1/16 inch holes centered at each end of the 5 ruler pieces, about 1/16 of an inch from the cut edge.
Step 5: Attach Hardware
Using the 8mm jump rings, attach a piece of hardware (washer, nut) to one end of each ruler piece.
Note: The best way to open and close jump rings is to hold it with 2 pliers (one in each hand) and twist slightly, as seen in jessyratfink's Instructable: https://www.instructables.com/id/How-to-open-and-close-jump-rings/
Step 6: Attach Pieces to Chain
Using an 8mm jump ring, attach one of the ruler/hardware pieces to the center link of the the length of chain.
Using the 8mm jump rings, attach the other 4 pieces to the chain (2 pieces on the left of the center piece and 2 pieces on right) at equal distances from each other so they'll hang nicely.
Step 7: Attach Clasp
Attach the clasp to one end of the chain using a 6mm jump ring.
Attach the other 6mm jump ring to the other end of the chain.