CR-10 Bed Leveler digital caliper

This is a variation of CallJoe's design (https://www.thingiverse.com/thing:2412647).

*** I've updated the clip, making the pull tab stronger.

Here's a reliable seller: http://www.ebay.com/itm/New-LCD-Display-Digital-Depth-Gauge-Tyre-Tire-Tread-Brake-Pad-Shoe-Wear-0-25-4mm-/162335220327?epid=582149460&hash=item25cbeee267:g:QnEAAOSw2xRYYjlH&vxp=mtr

I designed these two pieces so there's no need for supports. As you can see the back of the base has an angled rectangle. The reason: The C