Voyager Tricorder

This is my first attempt at a tricorder using basic measurements from an 15 year old game model. so i ask for help any of any one that could find me detail photos and measurements so to improve its accuracy to the original props.
I also plan to make 3d printable versions of all the star trek Tricordes both static models and working models. but i need the original prop measurements or even better there blue prints.

the photo is of one at 50% size