shorter clip & caliber holder - Ultimaker 2 Customizable Storage Rack

The Ultimaker 2 Customizable Storage Rack created by jakejake is really great. But I have built a cover on the top so I create a shorter version of the clip. The strength of the clip should not be affected.

Also, my caliper is a little bit different and the caliper holder is not quite suitable for me. I have just made some changes on the shape to increase the stability of the caliper holder.