Ruler stands are useful for organizing your various rulers. They can also be used to hold other objects such as mail, index cards, business cards, etc. Material is Pine.
 
Stand size is 3 inch long by 4 inch wide and between 5/8 and 3/4 thick.  
 
The ruler slots are 5/32 (.156) of an inch wide and 1/4 inch deep to fit your 1/8 (.125) rulers or other materials.
 
This design has a large rounded groove along the leading edge suitable for your seam ripper, or pens/pencils