With this cradle you can either epoxy ModMeter V2 inside of the enclosure or use the template to mount it with screws.
Here is a link to the screws that will self tap into the mount: M1.7 x 5mm Stainless Steel Countersunk Screws (Pack Of 10)
Here is a link to the ModMeter V2 printable scale template. Please don't trust this template and measure for yourself.