Casio clip

I wanted to clip Casio F91W (or similar) to a clip board so that I can see time and use stopwatch without looking at my wristwatch. Simple clip was the solution. I made a few versions with different gap sizes so you can clip it to different thickness objects. I ended up using the 2 mm gap version. 

The holes need to be 1 mm, I put 1.25 into the model because my printed had problems printing such small diameter holes. You might need to use 1 mm drill to finish the holes so that the retainer rods can slide inside.