I suspect that you will be pleased when you discover all that the tester can do. If you have not seen it yet, here is a link to a YouTube video of a short demonstration:
https://m.youtube.com/watch?v=b3dPBnYixs4
Contrary to his opinion, I find the ZIF (zero insertion force) socket to be very useful... about a month ago I went through a bunch of random semiconductor devices that were just thrown into a coffee can over the years and sorted out npn, pnp, fets, scrs, thyristors, diodes... very useful device!
Here is a pdf by the original desiger... likely more than most need to know, but an interesting read nonetheless:
http://www.mikrocontroller.net/attac...er_eng104k.pdf
jr