jmeyers,
Usually a company that requires you to take food temps provides the themometer that they want you to use. You may either have to pay for it, or "work it off", but I have found companies try and make their "fee" reasonable.
As far as a voice recorder, I use either the one on my camera phone, or if pictures are not required, a small hand held recorder from someplace like Radio Shack, K-Mart, Wal-Mart for about 30.00 works well.