Sliding Ruler

I created two versions, one in metric, and the other in imperial. You can make this as long as you want because it is printed in sections of either 1 inch (Imperial) or 3 cm (metric). The ruler also slides which makes it easier to measure. 

Printing:

• Nozzle : 0.4 mm
• Layer height : 0.12 mm (the connectors have to have really nice detail to work)
• PLA (might work with PETG, I didn't try it) 
• No supports needed