Drill press caliper mount (poor mans DRO)

I made a mount to use a cheap digital caliper as a digital read out(DRO) on my drill press.

My drill press is a 'HBM 16 hobby' bought on:
https://www.hbm-machines.com
The Quill diameter is 55mm

The caliper i used is cheap one from ebay
(search for "digital plastic caliper")