My design for a case for my component tester I have added 3 holes to use the pads and a break out panel so the leads can be used should they be needed. I had to bend the bar on the socket and I suggest if you do it you take it out of the socket and use some pliers otherwise you could destroy the socket, its a bit awkward to put it back together but a needle and patience will get it back together. I did intend to put some screw through to hold the back on but mine slots in and hold really solidly so I didnt bother. Also I put a little bit of foam to hold the battery firmly in place. Enjoy!
I thought I would add some info not directly concerning the print but the tester itself that I found quite by accident as I never got any documentation with it. If you press and hold the test button you get a menu with various other functions like frequency counter/generator. Now you clever folk may already know this but it was a complete surprise for me.